Intermittent fuel injector problem

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intermittent fuel injector problem The issue was intermittent, with the light coming on sometimes, and staying off at others. result from a bad fuel injector, a weak cylinder, bad spark plugs or ignition wires, an intake air leak. Disconnect the fuel injectors from their electrical connectors. 26 and multiply this by 60 sec. Compression problems that may cause a misfire include a burned exhaust valve, bent intake or exhaust valve, or leaky head gasket. There is crap in the tank and it has blocked the small fine filter inside the tank on the fuel Re: Power loss and intermittent fuel injector warning light problem. Any gas that is Dirty fuel injectors will affect the flow rate of the fuel, which can result in poor idling, stalling, hard starting or sputtering, which reduces your car's ability to effectively accelerate. LEAKING FUEL INJECTOR Jun 20, 2019 · For giggles, I check out the injector resistor. Its also possible that you may have a poor electrical connection at the injector. had to throttle it easy. When this happens you can leave the car overnight, next morning it works fine. on and listen for pump to stop. woodautogroup. Jul 19, 2019 · The fuel injection system is a critical component of every diesel engine. Intermittent Temperature. Jump to Latest Follow 1 - 8 of 8 Posts. Jul 10, 2020 · The fuel injection is the introduction of fuel in the internal combustion engine by using the injector. Fuel pressure is good (35 psi). If experiencing intermittent misfires, I strongly suggest using 93 octane, add Lucas fuel injector upper cylinder cleaner/lubricant, and run the engine without using overdrive for at least one week. It can become a crusty coating on the injectors because of the heat within the If the fuel injectors are dirty of clogged or otherwise out of balance, the risk for engine damage can be very high. No buzzing would tell you the injector is dead, while a no-voltage reading would tell you it isn't the injector's fault but a wiring or computer driver problem. Marine fuel injectors live a much tougher life than their automobile counterparts. You should have a CONTINUOUS rush/flow of fuel out of the line. Problems. Hummel’s Automotive Diagnostic & Repair explains below why this is a problem and lists the signs of fuel injector trouble. Well if your wife's 4 runner is similar to the tacoma's control scheme all of you computer controls are up under the dash on the passenger side. Jan 13, 2019 · Intermittent fuel injector? HELP. Jul 12, 2004 · Post by cruzbernier onJul 12, 2004 at 5:30pm. 3L VIN W engine). Feb 08, 2015 · Shut the tank valve, remove the line at the filter inlet and holding a suitable container to catch the diesel fuel, open the valve. Both were found to at the fuel injector pigtail where it comes out of the cable harness. On 11/23/2016 at 12:43 PM, Revatron said: perhaps suggests that the problem could be the connection to the injector rather than the injector itself, Jul 21, 2011 · Re: 2000 Mercury 200hp EFI wot intermittent problem Problem still happening. #2 · Feb 19, 2018. We experienced a Check Engine light and some rough running while driving in Texas. Freeze Frame: Fault Status: 00100000. Pic 3 7. This GM vehicle was still running and came into the shop for an intermittent stalling problem. A EZ test for pin hole is to turn the ign. 1990 in the U. Fault Priority: 2. A/T. Fault fuel injectors in a diesel engine. However, these damages may cause accidents in the car since the fuel injectors fail if they are dirty to supply fuel correctly, raising the engine’s temperatures and destroying it. Discussion Starter · #1 · Aug Step 2. Recently I started having problems with cylinder misfires. The Engine Misfires. That is my opinion. All Vehicles pic 1 4. Background: From a while back, occasional 'glitching' like a little jolt, while driving at steady speed for some time. Al had replaced the central multiport fuel injection (CMFI) unit, along with a fuel pump, fuel pump relay, distributor cap, rotor, spark plugs, spark Sep 24, 2019 · So the problem does need to be fixed, even if you can't detect an issue in normal driving. The biggest result of Common rail diesel injector failure is due to excessive back leak or return flow. Never had any issues with the PID reading for fuel pressure. Checking Available Voltage At the Injector Verifying a fuel injector has the proper voltage to operate correctly is good diagnostic technique. **The Basics** Most cars of the 70s and earlier use a carburetor, while most modern cars these days use electronic fuel injection Note the Freq (Hz) is 79. miss. Quote; Post by AngusandAggie » Thu Jul 05, 2012 11:34 am . Only have 82k miles (lite use for camping/outings with ATV trailer). It idles great until I raise the rpms then it leans and dies. Such misfires can happen when a fuel injector problem mixes up the delicate balance between fuel and air entering the engine. Fuel is under pressure behind the injector (an electric gate) which opens when the bike control computer tells it to. Apr 05, 2010 · It was the front injector wiring that was the problem , the wiring for it was tiestrapped to the frame too tight and when the engine moved around it would pull the wire apart inside the wire sheath . Note: Regardless of the code and the system affected, the word “Intermittent” refers to the fact that there Sep 09, 2021 · The idea of electronic fuel injection systems was developed to solve the old mechanical injection systems problems so relying on the reading of a different sensor feed into a control unit analyze this data and give back the exact amount of fuel needed to meet better engine performance and at the same time best fuel consumption, these modern EFI undetectible Intermittent Starting Problem. Jan 19, 2021 · 1. Your rapid rpm changes at higher speed indicate an ignition coil misfiring or a fuel injector sticking on and off. Jun 06, 2010 · 13. I replaced the fuel pump relay under the hood fuse block and the engine still runs poorly. Injector fault showing and car not starting. It happens after the engine is warmed up and is most noticeable while Can anyone help with the following problem: I have a Punto 2000(w) 1. 3. Feb 19, 2018 · 11,654 Posts. Now onto the real story behind these problems. plugs must be good because it runs fine when it pulls out of the stumble, same goes for cap/rotor/coil/wires. 3 liter Metro because it was old with a lot of miles on it, and I could, and it was cheap enough and I kept the injector, because there was nothing really wrong with it. Of course it's hard to describe a sound, but it Sep 30, 2014 · Ford Focus - Intermittent judder / injector problem. Collect the fuel in a clean container for Aug 15, 2018 · I actually did some (albeit under-informed) research on common causes for a problem like this and ran across the cracked/leaky fuel injector. While running on the interstate approximatelly at 75MPH my Suzuki Sidekick 1990 JLX suddently the engine stopped. There are two problems fuel injectors suffer from: clogs and leaks. The exhaust becomes plugged up. One other symptom that may be a different problem is while increasing rpms while in neutral, engine leans out and dies. If that comes on during the prime (or engine cranking) but still no fuel pump run then you know your problem is after the fuel pump relay (between the fuel pump & the pump relay). Pic 2 6. thing to do (if you're mechanically inclined) is. On 11/23/2016 at 12:43 PM, Revatron said: perhaps suggests that the problem could be the connection to the injector rather than the injector itself, Mar 11, 2016 · . if it's bad, you can easily see it by eye alone. Normal fuel spray looks like a nice cone. Fuel pump intermittent, enough to kick in injection accelerator pump, not enough to kick in dual injectors. This problem should be fixed as quickly as possible, as it could progress to the point where you cannot start the vehicle at all. Water in your fuel is the easiest and first thing to check. If you experience difficulty in getting the vehicle started, this indicates a bad injector or faulty O-rings on the fuel injector itself. Al had replaced the central multiport fuel injection (CMFI) unit, along with a fuel pump, fuel pump relay, distributor cap, rotor, spark plugs, spark An awful lot of queries through the forum relate to poor running. The functions of a fuel injection system include feeding fuel to the injectors, adjusting the fuel quantity, adjusting the injection timing, and atomising the fuel. The faulty parts allow the fuel to travel back up the injector to the fuel system or diesel tank. After towing it home, I put some gas trhu the intake manifold at it started, but died right away. 9 (Cadillac) Jul 17, 2019 · Don’t ignore an engine that isn’t running right. Another common problem with fuel injectors is the buildup of fuel varnish deposits in the nozzle that restrict fuel flow or disrupt the injector’s spray pattern. The benefits of using fuel injection include smoother and more consistent throttle response, like easier starting, accurate adjustment, and changes in air pressure. The strobe effect highlights the fuel pattern coming out of the injector. The Bosch VP44 pump was designed in Germany for German Diesel fuel which is high in Sulfur content. Jul 10, 2014 · Since your bike is 10 years old, the fuel filter INSIDE the tank may be clogged. Aug 28, 2019 · The information relayed by the crankshaft position sensor is used to control fuel injection, the ignition system, and general engine timing which are all essential for the cylinders to fire properly. 4. I would suspect the high idle and rough idle is caused by excess fuel in one cylinder. Rear injector replaced about 8k ago (took the HD mech 5 hours to figure out the injector was bad, another 3 hrs on the dyno to tune afterward). 6 Style. Cut the tie strap and disconnect the injector connector from the injector then pull on each wire to see if it stretches . May 04, 2006 · A clogged fuel filter can cause damage to the injection pump by starving it of fuel. This intake has an IAC that works through a plenum chamber under the intake that is plumbed to each IR. Note: on V6 and V8 engines, look for the cylinder bank that is offset slightly Jan 14, 2017 · 900xp no fuel pulse/intermittent/weird make the injector pulse it adds some fuel to the cylinder to allow the cold start. Another symptom of a failing or leaking fuel injector is a fuel odor. Dirty Fuel Injectors - Residual fuel additive that is not dispensed within the manifold can leave a film on the fuel injectors. I've always racked it up to my tuning, fuel, fuel additives, maybe air in the fuel from filter changes. When i turn the key and the yellow light comes on, i sometimes cannot hear the fuel pump priming, and then the bike will not start. is my first thoughts also could check accelerator cable adjustments. You can have ALL these problems and the diesel engine will run, but it will become extremely ornery. Therefore, you must insure proper functioning of these basic systems before beginning to troubleshoot your fuel injection!! I hope this guide will be of use to If the fuel injector in question was not providing any fuel at all and is not shorted, then a P0303 would be present, and perhaps a P0171 (lean mixture fault) as well. Nov 13, 2008 · DIRTY INJECTORS. " When the book-in came, I allocated more time than usual to this one. they obviously are working as Ma Mopar intended 80% of the time. Fuel Injector Problems. Oct 04, 2005 · 1990 3. Jul 26, 2017 · Smell of Fuel. Remove the bolts. While some gas tank additive injector cleaners may help reduce the build up in the injectors, the only real way to clean them and restore peak performance Jun 12, 2017 · The #3 fuel injector was bad and had actually come apart (the mechanic said it came out in two pieces). Based on this reasoning, the fuel system is not likely to be the source of the intermittent misfire. Sep 09, 2021 · The idea of electronic fuel injection systems was developed to solve the old mechanical injection systems problems so relying on the reading of a different sensor feed into a control unit analyze this data and give back the exact amount of fuel needed to meet better engine performance and at the same time best fuel consumption, these modern EFI This problem is specific to GM vehicles built from the late 80s through the early 90s. The challenge is the same: keeping fresh fuel in the tanks, having annual fuel-system maintenance, and frequently using the boat. This article concentrates on the more general setting up of the system. Fault Frequency: 1. Related to thread about fuel injectors, Re: yodawill2000, et al Apr 30, 2012 · A friend has a VCDS system and gets some codes for me. Given what we know about total fuel trim (see October/November 2016 issue of GEARS), the problem isn’t a fuel injector-related misfire. The lift pump does not deliver enough fuel pressure. still learning to make adjustments. Now the symptoms are back again- OK acceleration, but misses during steady speed, fuel mileage down, backfires and pops. Intermittent misfires are a huge indicator of a malfunctioning ECU. Place your multimeter in Ohms mode. Dec 23, 2019 · 1. Another quick test you can do is to put a 12v test light or voltmeter on the green wire going to a fuel injector. As we’ve written previously, we test the heck out of injectors with state-of-the-art equipment you won’t find anywhere else. Injector Failure. Dec 29, 2020 · A P0208 code means that the PCM has stored a trouble code indicating poor performance on a fuel injector on Cylinder 8. "It's a BMW X5 with an intermittent misfire and keeps logging P0205 Cylinder 5 Injector Circuit Malfunction, but it’s got an LPG conversion, Nick. Fuel pump malfunction main issue. While some gas tank additive injector cleaners may help reduce the build up in the injectors, the only real way to clean them and restore peak performance On to the next suspect, indicated by the plugs (lean read on #4), misfire behaviors (intermittent, heat-related and occurring at consistent rpm) and the elimination of other suspects: fuel. Inboard, sterndrive, and four- and two-stroke outboard motors are all subject to fuel and injector problems. The other 5 injectors were all tested and cleaned and they were fine. Technical Service Bulletin # # PI1296: Diagnostic Tip for Engine Misfire and/or Popping Noise on Cold Startup after Cylinder Head or Fuel Rail/Injector Repair - (Aug 19, 2014) This may be caused by improper orientation of the fuel injectors due to the previous repair. Replacing fuel injectors helps prevent the turbo engine from damage. Only during, warm-up. 1, 3300 (Chevy, Buick, Olds, Pontiac) 1. All nominal. I filled up with Tesco fuel (£20 worth) the day before thi Jan 28, 2021 · Fuel injectors make a sharp clicking sound, when they are functioning properly. Sep 21, 2019 · Hi, My 2011 Transalp 700 VA has developed an annoying and increasingly frequent fault. I disconnected the fuel line at the injector and put the swith to ON and it sputtered Jun 04, 2010 · It was my Fuel Pressure Regulator. Only when the engine reaches, normal operating temperature. One of the first symptoms of a problem with the fuel pump is a loud whining sound. Removed the fuel tank check valve. The vehicle never stalled but the problem was found using an Amp clamp on the power wire to the fuel pump. Unfortunately, finding an intermittent or excessive resistance problem with a DVOM is unreliable. This may be indicated if the misfire always seems to be the same cylinder, although a bad spark plug or wire or mechanical problems in that cylinder are other possible causes. Aug 23, 2010 · Intermittent fuel pump problem. i am old school but the throttle response of this Sep 26, 2018 · About 40,000 miles ago I replaced a fuel injector with a non-OEM injector and I believe it was cylinder number 1. If the fuel injectors are dirty of clogged or otherwise out of balance, the risk for engine damage can be very high. 5. A. I filled up with Tesco fuel (£20 worth) the day before thi Mar 30, 2009 · Newbie to the Forum. The issue with #3 was causing all of the remaining fault codes. Many problems believed to be caused by the fuel injection are actually caused by some other malfunction, often the ignition, electrical system or a mechanical fault (low compression, etc. Jul 12, 2012 · Re: Intermittent problem with my TJ, need help! Check the wiring on that injector all the way to the PCM. Remove the coil on plug. The first day it happened I immediately read the codes and pulled up the codes p0300, p0303, p0305, p0306, so that is multiple engine misfire, specifically cylinders 3, 5 and 6. - 30,000 Miles. If the injector is open or the resistance is higher or lower than the spec, replace the fuel injector. Took the plugs out today, the rear plug is fouled. To correct the problem, Ford has issued a new starter terminal pigtail kit (Part #6U2Z-14S411-NA). When the fuel level fluctuates drastically, the high and low rpm's will cause the Jun 28, 2012 · Intermittent Fuel Injection (?) problem. Start your vehicle. 1. Leaking lift pump or sticking fuel injector. Any gas that is Nov 18, 2015 · Specifically, if the ECM detects a temperature change in excess of ±10 °C (±18 °F) / 100 ms, it interprets this as an intermittent circuit fault, setting DTC P0189 – “Fuel Temperature Sensor “B” Circuit Intermittent. If the injector tests out, the problem is likely an intermittent wiring problem. 2, 3, 5, 8. Oct 18, 2017 · The total fuel trim correction for bank 1 is about –2% and bank 2 is around 5%. May have been shorting on a harness clip. 8 TDCi 2008 with 135k miles. After spending lot of money, i am driving the car with some injector not working (horrible experience), hence planning to replace the car. Sep 13, 2020 · The problem is an intermittent open circuit between the starter relay and the starter motor. If it dribbles or is intermittent, check the fuel cap for a blockage of the fuel vent or the strainer upstream of the valve for clogging. The best tool to use on this is a multimeter by testing the wire resistance between the injector Oct 15, 2020 · Fuel injectors can get clogged with carbon deposits and debris. 7 in the Corvette and Camaro; 2. GM corrected the problem with an updated injector design and even extended the warranty on the new injector design to 7 years/200,000 miles. Jun 04, 2010 · It was my Fuel Pressure Regulator. Whining Noise From the Fuel Tank. Bearing in mind a) it is very intermittent, and there might be months between incidents B) it only seems to happen at the beginning of journeys when the engine is cold? Nov 23, 2016 · code P1203 Cyl 3 injector circuit open/shorted-permanent. And, use only OEM-quality parts. May 17, 2012 · Have you listened to all the injectors with the engine running and compared ? you could use a screwdriver if you haven't a stethoscope ,might just have a sticky injector solenoid or blocked injector filter or pintle. In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring. When I’d brought my car to the mechanic most recently, I asked him if he thought the fuel injectors might be the problem, and he said that if that were the case, my car would be overall running much more poorly than it has been. If the injector is buzzing and spraying fuel but the cylinder isn't getting enough fuel, the injector is dirty or clogged. Last week, my 2014 Disco TDV6 3. Does this fault sound consistent with an injector problem. Hello I am working on a 3. Fuel injector problems can be a serious matter. But then, I remember that I changed the injector in my 1. Joined May 28, 2009 · 62 Posts . 0 and 5. Jan 06, 2018 · Re: mf 245 intermittent fuel problems. The garage was a BMW specialist and the shop owner had a long history with these cars, so if he Nov 23, 2016 · code P1203 Cyl 3 injector circuit open/shorted-permanent. Also, there could be a bad ground or loose wire that is causing too much resistance in the circuit, preventing the engine to start until it cools. 9 (Cadillac) Jun 12, 2017 · The #3 fuel injector was bad and had actually come apart (the mechanic said it came out in two pieces). So, the absence of this sound can indicate, a problem with an injector. If the fuel injector is clogged, the fuel supply will be irregular too. Those darn intermittents. 18,000 miles on the bike. Feb 24, 2021 · If an intermittent temperature related starting or driveability problem only occurs when: When the ambient temperature is, high or low. . You may have a leaking fuel injector. 10-04-2005, 12:07 PM. This noise is random in nature, no set RPM value, yet more noticeable at lower RPM. maybe injectors, pattern looks fine on the driveway, and again it's intermittent. So I have a 1999 4runner 3. It uses the sulfur in the fuel to help lubricate the injection pump. Drain the fuel from the fuel tank. Two cases - 1800 intermittent loss of a cylinder. 2: Fuel rail pressure range/perfromance. 2 Faults Found: 008518 - Supply voltage for Fuel Injector Group A. Leaking Injectors. Step #1: Replace all maintenance items. BMW X5 | Intermittent misfire. Sometimes it's fairly "loud"/consistent, sometimes it's barely heard. Never had any problems with the bike before, engine runs great. had the same problem with my 327 sbc. It felt like the engine was misfiring (it's been smooth as silk for the past 206,000km). I get a bit of noise as well dependent on conditions. When the car does not start there is no injector pulse. Sep 26, 2018 · About 40,000 miles ago I replaced a fuel injector with a non-OEM injector and I believe it was cylinder number 1. If not then you have 1of 2 problems. May 24, 2013 · Most times, a leak creates a "roaming" miss fire. It also has a second plenum chamber plumbed for the MAP signal. Ok, for the next person with this issue here is what finally seemed to be the issue. Intermittent as sometimes starts first go every time. ”. Fuel injection system maintenance and troubleshooting. Replaced pcm. went into the master, selected enrichment fuel, then accel fuel and decreased the fuel. My ybr 125 fuel injection system seems intermittent. Aug 29, 2021 · It's an Enderle eight Stack on a 454 BBC. to find the RPM of the fuel pump was 4755. This problem makes the motor feel as though it is sputtering — sending vibrations through the car. Oct 25, 2019 · One case, 1800, a rider had problems, somehow a seat was putting pressure on the cable harness. A leaking injector can cause all of the problems listed above, as well as: Thin Oil– When a fuel injector leaks, all of that fuel is not getting burned in the combustion chamber. While the motor is running and I pull off the electrical Re: Power loss and intermittent fuel injector warning light problem. Dirty fuel injectors will affect the flow rate of the fuel, which can result in poor idling, stalling, hard starting or sputtering, which reduces your car's ability to effectively accelerate. The injection pump and delivery valves lose their mojo. Next time the truck acts-up I’m going to pull over and put a large screwdriver on the number 1 injector and put my ear up to the handle and see if maybe there’s a problem here. Mazda B2200 pick ups were fuel injected as of. At first i thought it was my ignition coil because the hard starting was intermittent and i ran a test on it and the Primary Resistance was way off spec, but the Secondary Resistance was spot on. A leak from either of these areas can affect engine performance – most noticeably fuel efficiency – and will Oct 05, 2020 · Intermittent fuel injector errors - TDV6 3. P2146 - 000 - Open Circuit - Intermittent. The problem is surely related to Cylinder 4, its fuel injector, the fuel injector connector or associated harness/wiring. It is easy to replace fuel injectors. - There is no injector pulse when fault is occurring, the most important info here is wiggling This problem is specific to GM vehicles built from the late 80s through the early 90s. An old or worn fuel pump may produce a noticeably loud whine or howl while running. Though an injector problem had been suggested earlier, it was best to rule out the ignition parts before moving on to a set of injectors that required some Jul 10, 2020 · The fuel injection is the introduction of fuel in the internal combustion engine by using the injector. You should have a steady, full pipe of fuel running out. An abrupt loss of engine power is a somewhat obvious sign of a fuel injector failure. would stumble off the line and die. S. I went and got it. This supposition has been confirmed by the fact that even after you replaced the coil for Cylinder 4, your problem persists. This tells you that, engine temperature is affecting something. I recently saw a rapid high speed engine surge for the first time on a 90 hp ETEC on a pontoon boat. Any gas that is I got a tester and it came up with three codes: 1: Fuel pump relay circuit malfunction injectors. Mileage: 76741 km. This code could be due to a bad injector, an open or short connection, an intermittent open or short, a bad ground or even a bad PCM (though rare). Finding an open circuit on the feed circuit like a broken wire or connector is an accurate check with a DVOM. Sep 29, 2020 · I don't have a pressure problem. What’s causing the Ford EcoBlue injector issue? Ford says the issue has been caused by quality problems with a third party supplier, which provides the injectors fitted in the Transit, Transit Custom and Ranger EcoBlue models. 2 8v with an intermittent fuel injection problem which has occurred 3 times so far, injectors 2 & 3 stop getting an electrical signal causing the engine to run on only 1 & 4. Hello hawg, Since you are able to start and run, go to the line out of the fuel tank /first filter and disconnect. Dec 29, 2020 · When it's time to squirt fuel into the cylinder, the PCM grounds the other terminal and completes a circuit, which activates the driver and solenoid to open the injector. If no pressure exists, the problem. The engine is, hot or cold. Disregard ground circuit from injectors as its hard to measure accurately. Aug 25, 2015 · If this concern is found repair or replace the injector harness as needed. Rev engine to 4500 RPMs for 15 seconds while sitting in park. I have searched the web extensively and found bits of useful info but not managed to put them together into an answer to my problem. Disconnect the injection control sensor, and the fuel temperature sensor, and position the wiring harness out of the way. undetectible Intermittent Starting Problem. Make sure everything is up to date, including filters, fluids, all ignition components (plugs, cap, rotor, wires). In general, fuel injectors are hard wearing and with a little care, can often last; the life of the engine. I made it home without incident, and the next time I drove it, it was back to its usual smooth self. A high CO level can result from a bad fuel pressure regulator, a bad air flow meter or air mass sensor, a performance chip, a bad temperature sensor, or a bad O2 (oxygen) sensor. This system pressurizes and injects the fuel into air that has been compressed in the combustion chamber. 6 RPM. teryxosaurus · Registered. 4L limited with 150,000 miles. 8, 3. Probe the cylinder #1 fuel injector's two male spade terminals with the multimeter test leads. Nov 02, 2015 · Once the problem injector(s) are confirmed (by checking the balance rates and/or capping the feed line to injectors one by one, or bench testing), it’s time to get it fixed. The fuel tank gums up and the filter screen becomes plugged. This is the waveform of the O2 sensor when it failed and was stuck reporting to the computer that the exhaust was rich. When the PCM detects an intermittent voltage or resistance problem/malfunction within the injector control pressure sensor circuit, code P2287 will be set and Aug 28, 2019 · The information relayed by the crankshaft position sensor is used to control fuel injection, the ignition system, and general engine timing which are all essential for the cylinders to fire properly. Short version of what’s wrong with the car and important notes: - Mostly heat related starting problem. Write it down the resistance value on a piece of paper . 0. Apr 20, 2011 · Alright, here are the steps: 1. surging :vacuum leak no power :spark plugs,leads intermittent rough idle : spark or fuel injector pulse. SYMPTOM: Intermittent loss of power. 9 (Saturn) 4. Your intermittent no-start. Once the injectors itself or the filter basket becomes clogged, no amount of intake or fuel rail induced injector cleaner will resolve the problem. Allways seems to be on a hot day when the bike has not been used for a few hours Jan 08, 2016 · Usually, a bad or failing fuel pump will produce one or more of the following 8 symptoms that alert the driver of a potential issue. Sometimes the symptoms are intermittent running, this is often as a result of dirt/rust in the fuel system (see advice here). The turbo starts to drag. . A fuel injector is considered to be clogged if the amount of debris or gunk inside the injector or filter basket has built up to such an extent that it does not allow fuel to flow through. 2. The ECM told us we had an electrical connection issue on injector #2. I have a 99 F350 7. Car is Focus 1. If the mis is only on the 1 cylinder, it could be an injector. Runs, doesnt run enough. Because fuel injectors hold high amounts of pressure, and over time they can begin to leak around the seal at the tip of the injector or nozzle. 3L long bed crew cab 4X4 w/auto trans. Info on the problem. If they're clogged or have fuel low pressure, the cone will look distorted or even dribble. Premature injector failure was a critical problem for the 2001 to 2004 model year Duramax LB7. So beings that it was out of spec i would replace it anyway even if it wasn't the cause of the problem. Jul 16, 2019 · Don’t ignore an engine that isn’t running right. 2L I4, 4-spd. Important: Injector Flow Rate must be programmed into the ECM as part of injector replacement. How To Prevent Fuel Injector Problems. - Auto. Installation pic 4 1. - There is no injector pulse when fault is occurring, the most important info here is wiggling 3. 3: fuel injector 2 control circuit malfunction. On many late-model engines, the shape and direction of the spray pattern is critical for clean combustion and good performance. That is a fairly specific error, relating to an electrical fault somewhere between the ECU & the injector. Check your vehicle´s idle. The reasons fuel injectors fail vary, but here are five of the most common problems with fuel injectors. Aug 14, 2020 · Duramax Engine LLY 2004. You’ll do way more damage in the long run by not fixing the problem now. Dirty fuel injectors may cause your vehicle's engine to misfire. 11. (Remember that a fuel injector can work properly when cold but go open when hot, or vice versa. after a couple of decreases I found it performed better at negative 3. 16. HELP! broken down HT leads (from the spark plugs to the coil) could cause it, as could a poor earth strap. Disconnect the eight fuel injector electrical connectors. That's the most common cause for a single cyl. Aug 15, 2018 · I actually did some (albeit under-informed) research on common causes for a problem like this and ran across the cracked/leaky fuel injector. In addition, the technician swapped fuel injectors and the misfire remained at cylinder #3. 0. There is always spark and good fuel pressure. what was condition of fuel filter ? also thinking vacuum leak somewhere. POWERTRAIN: 2. Aug 27, 2021 · Afternoon Bob. It is easy to waste a lot of time and money chasing a problem by replacing expensive fuel injection components, just to find it is a regular maintenance item Many modern diesel engines utilize an injector driver module (in conjunction with the PCM) to facilitate fuel and oil delivery to the injectors for each individual cylinder of the engine. Jun 03, 2020 · Lean misfire causes that only affect one cylinder include a dirty fuel injector, an open or shorted fuel injector, or a problem in the fuel injector driver circuit (wiring or PCM). May 09, 2011 · If there is no fuel then it does not matter if there is a spark or not. The review was helpful Oct 08, 2021 · It helps in the fastening of turbo problems. Also, as dbmg suggested above, the fuel line is prone to rubbing a pin hole in itself. A HC level failure can. This caused the computer to hardly open the fuel injectors, thus causing the hesitation. Fuel in VST is clean. It is also intermittent in nature. While driving up the M1 last night, on 3 or 4 occasions, when I opened the throttle to overtake, the HISS warning In the May 2002 Trouble Shooter, we published a letter from Al Martin of Pine Brook, New Jersey, describing the starting problems he was having with a 1992 Chevy S-10 Blazer (4. Oct 15, 2020 · Fuel injectors can get clogged with carbon deposits and debris. 1 that has an intermittent no start problem. Here is a partial list of the cars that used this style fuel injector. This could be due to a bad injector, an open or short connection, an intermittent open or short, a bad ground or even a bad PCM (though rare). Mar 06, 2011 · im thinking injector cleaner into fuel tank,which would rule out a lot of things. Most of the time, fuel injection systems operate trouble-free. - The car drives perfectly. You could check the pulse with a Noid light Aug 28, 2020 · This is done with the air cleaner off or course. 0 suddenly started to run rough over the last km or so on my way home. Did you complete the replacement? _ Go to Step 13 _ 12 The fuel system is contaminated. Disconnect the coil on plug (COP) electrical connectors. The installation instructions are included with the kit. When a problem occurs in the fuel injection system, it is often intermittent and sometimes can be difficult to pinpoint at first. Replace the affected injector that indicates a high balancing rate. Jul 17, 2019 · Don’t ignore an engine that isn’t running right. HD has replacement fuel lines, or you can get fuel injected specification, submersible fuel line from auto parts stores for 1/3 the price. - 2008 Ford Focus 1. Rough-running engines are usually fairly straightforward to diagnose. 1 No Injector Pulse - Intermittent. Position Sensor problem although Oct 25, 2021 · Answer: The problem could be in the fuel system but it can be hard to diagnose if it is intermittent. I have tried several other ECUs that I have lying around and the same problem exisits. 5 to 2005. If that doesn't clear it up consider that it could also be an intermittently defective fuel injector. One easy. Nov 24, 2009 · Latest diagnosis says ‘Injector 2’ is out of parameters, so the recommendation is to replace ALL the injectors. One was blowing fuses intermittently, the other lost a cylinder. In the last 2 years I have been getting an intermittent "rapping" noise from the engine that sounds like a single lifter. ). Apr 21, 2017 · We have a CAT C9 in our 2007 Fleetwood Revolution LE. Find the source. FUEL INJECTORS: If your engine is running or idling rough, one possible problem is a plugged or bad fuel injector. It definitely makes sense to be proactive about this to save yourself a lot of money and headache in the long term. I'm thinking there might be a break in the wire that has continuity on light loads and looses contact inside the wire when it gets hot. condition is most likely electrical. March 2001. next time,check fuel pressure with a fuel pressure gauge. Etc. The cause of this would be internal worn parts ie your pilot valve, nozzles or seals. By addressing the most common issues and their symptoms, you will be better able to make a diagnosis of a fuel injection problem. intermittent fuel injector problem

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