If i put the key in and turn it to on, but not far enough to start the car, then go out and lift the hood, i can smell gas. Anyone know a mcguver way to free a fuel injector thats stuck open without removing it. Last cylinder flooded with gas on rear drivers side, compression good, new cylinder heads installed, plugs, wires, while running strong smell of gas from exhaust pipe i tested with anold light on injector. This is often counterintuitive to diesel owners who consider the. Injecter stuckopen no pulse from computer need help. Would it be a particular plug, fuel injector, or wire.
Fuel injector fixdirty or stuck injector fix test your. A clogged or low flow injector can cause surging, low power or. How to test a fuel injector circuit with basic tools open. It is clogged or you have a miss on the driver side bank of. This problem ended up frying the sensor ground circuit in the pcm. While many drivers choose fuel additives to improve performance, the stiction that is causing an injector failure requires a stiction eliminator oil additive.
Which fuel injector cleaning method procedure or system is. Dealer found a fuel injector was stuck open pouring gas into the cylinder and oil and a bent. Fuel injector flow rates, atomization and distribution are affected and this can cause all sorts of drive ability and performance problems. Then plug that wire into a spare spark plug and lay it on the inner fender to see if it sparks. Print the fuel injector is a solenoid device controlled by the pcm that meters pressurized fuel to a single cylinder. Supposely they cut the ground wire and rewire it with another cylinders injector ground. In this video ill show you how to clean sticky or clogged injectors. I tried flowing them normally as well as backflowing them. Fuel injectors are considered to be dirty when the hydrocarbons and additives which all forms part of todays fuels, together with engine gunk and carbon, cause the injectors to become restricted. Bad injector stuck open gas pours into cylinder non stop.
Either a lead wire or the injector coil itself is broken, though there can be other reason. Anyone ever had the experience of a stuck injector. What is the difficulty level of replacing the fuel injectors myself. Welcome to the north american subaru impreza owners club. We tested 4 injector cleaning methods to see which delivered the best results. If you unplug the injector from the harness and just cycle the key no fuel should spray when pump runs. Ive heard of people saying one of the wires grounded itself somewhere and thus making the injector stuck open. So my assumption is that there is an injector stuck open leaking fuel into the engine or something is cracked ect. Fuel injector sound by using an engine stethoscope, you can listen to your cars engine. I have a fuel injector stuck open on my car and sometimes it stalls while accelerating. In this case, there may be an odor of unburned fuel in the engine compartment, coming through the vents, or even out of the tail pipe. What are some causes that will not let the throttle open fully when driving. If an injector is stuck, the corresponding plug will be wet with gasoline. You would need a newremanned eecv to fix this and should be one of the first things to take care of.
The solenoid is energized and held open until it delivers the correct amount of gas and then its turned off. I replaced that injector because it was questionable on the test bench. Mechanic found a fuel injector was stuck open pouring gas into the cylinder and oil. Dirty injectors or ones that have failed completely will either be stuck in the open or closed position. At about 2000 rpm the engine runs smoothbut the smoke. Fuel injector symptoms bad, faulty, dirty, clogged, leaking. How do i diagnose a stuck open injector chevy and gmc.
Dodge magnum questions fuel injector code stuck open cargurus. The fuel pressure dropping could be caused by an injector, but it more often indicates a dead check valve in the pump or a leaking regulator. When the key was turned to prime fuel boiled up the rear driver s side barrel and over the top. Could be the injector pintle is stuck open and just allowing the fuel pump to keep pumping the fuel in. You just blew the headgasket and your coolant smells like gasoline. When i have my car off and the fuel pump running either the check connector or via the datalogger you can clearly hear the fuel flowing out the return port on the fuel pressure regulator. Its one of the more frustrating parts of diy car maintenance. It got so bad within two miles that i had to pull over and it quit. How to test fuel injectors3 simple methods axleaddict. Fuel injector problems defective pink fuel injector. This is a common issue on the caravan and town and country models. You can do this from the injector plugs on the ground side with all pcm connectors. I have a couple of injectors that are faulty and cleaning doesnt seem to be fixing them. How to test a fuel injector open winding case study nissan.
When the pcm energizes the injector coil, a normally closed bail valve opens, allowing fuel to flow past a director plate to the injector outlet. So obviously, when the fuel injection system fails, the engine fails and you can no longer travel the streets of burke, va. Its too late for cleaners at this point, if you wanted to try that you still need to remove the stuck injector and then soak it in cleaner, trying to do it with it in the engine will not work at this point it will only flood the engine worse. We were just leaving town on a road trip when it started running fat at freeway speed. While driving, this will feel like the car will leap up but have a hard time taking off. Fuel injectors are used in all modern engines, and are a vital component in the fuel management system. If a fuel injector is truly dead, it is either no longer opening or is clogged in such. The car hadnt been started for about 6 mos, so im thinking its corroded in there. An injector that is stuck open or partially closed will emit an unburnt fuel odor in. I have not heard of one being stuck open, but what is more likely is that injector driver is shorted out and constantly driving the injector on. Here are 10 signs to look for when you need to replace a fuel injector or when it. The symptoms of a stuck open or incompletely closing fuel injector are quite different than an injector that is completely dead or partially clogged.
Just looking for some input on a problem im having with my 04 sti. Can a bad ecu cause all injectors on a car to be stuck open. The fuel injectors are responsible for delivering fuel to the engine of your car, truck or automobile. Use a socket extension to help pull the coil out if it is stuck. A stuck injector would be giving you a dead cylinder and wet spark plug or at least a very black one. Dealer found a fuel injector was stuck open pouring gas into the cylinder and oil and a. Ill also show you a number of tests you can perform to ensure you have a good injector before you clean it. An injector that is stuck closed will give you a reading of 200 to 250f, and one that is stuck open will cause the temperature to rise up to 600f or more. Black smoke that turns white, rich horrid diesel smell, rough idle, spark knock, cylinder contribution codes change out both injectors and you should be good to go. Remove the ignition coil from the cylinder in which you are performing the fuel injector service by releasing the electrical connector and pulling it straight out of spark plug tube. In a bid to reduce exhaust emissions, manufacturers were forced to change how fuel.
Very rarely will you find a standard fuel injector keyed to the manifold or rail. Finding out that your injectors are stuck in the fuel rail or manifold can be a real facepalm moment which, in. I found oil in the starboard side engine cowling and took it over to my local marina. It is not a strong smell, and there doesnt seem to be a leak anywhere, but i can smell it. We ran a jumper wire to ground to get it to run again. You went to the dyno and cant tune the afs out of the 7. When you turn the key on the hear the pump prime and then a squirting or leaking sound, but no leaks and cant smell fuel. That would imply that none of the injectors is stuck open and that the problem must be electrical. An injector that is stuck open or partially closed will emit an unburnt fuel odor in the engine compartment. I change the spark plugs, oil, etc but im not too sure about trying to replace a fuel injector. Mechanic told me to replace the fuel injectors, that they are bad. Five common signs of a failed fuel injector car care. This is an open class rally car motorwise its fairly stock aside from 11.
For more information on this topic, i have written a field manual called engine performance diagnostics which is available as an ebook or paper book. A bad fuel injector will wreak havoc with how your engine runs, and will likely leave you stranded on the side of the road up until the 1980s, fuel injection was controlled in most engines by a carburettor. Been running well with no hiccups for 23 weeks now on a pontiac 400. This means that while driving, the engine will vibrate or hiccup after it tries to finish. If you are talking about car fuel injectors then it means just that that the electrical circuit is open and not closed, meaning electrons will not flow. What are the effects or symptoms of bad fuel injectors. I do not believe this since i recently replaced the injectors. How to test a fuel injector circuit with basic tools open control wire. Mechanic told me to replace the fuel injectors, that th. Uneven idling if your engine is not idling smoothly, there can be an uneven distribution of fuel to the engine.
So, once you have any retainers free, the fuel injector should turn freely in its mounting hole. You can also use an ohmmeter to test for an open or shorted coil inside the fuel injector. Five common signs of a failed fuel injector engine performance is significantly affected when fuel injectors fail. Now my question is, how do i tell if the fuel regulator is okay. The reason for it slowly dieing is compression gasses are getting forced into the rail. One appears to be stuck closed and the other stuck wide open. Yamaha jet boaters view topic fuel injector stuck open. A fuel injector that is stuck open or leaking seat will flood or run rich the cylinder. Found all 4 cylinders on driver side being flooded with fuel. Is there anyway i can diagnose a stuck open injector. If you had an injector stuck open your mileage would suck and the car would run poorly to start with. Fuel injector stuck open causing catalytic converter.
Fuel injectors stuck open ford truck enthusiasts forums. Fuel injectors can get dirty, clogged, or completely fail. The symptoms of a stuckopen or incompletely closing fuel injector are quite different than an injector that is completely dead or partially clogged. Pretty happy overall with the new sniper, until friday. Ive pulsed the them and lightly rapped on the side with a. Fuel injector stuck open causing catalytic converter failure is there a problem with injectors like the plugs. Millions are spent on fuel injection cleaners, most dont work. The symptoms of a stuckopen or incompletely closing fuel injector are quite. Also, it would be highly unlikely for all the injectors to mechanically get stuck open at the same time. A dead injector will cause the engine start and operate when it is cold but not when it is warm. Almost without exception, fuel injectors use round mounts and orings to seal to the railmanifold. But if a vehicle is used primarily for shorttrip driving, the deposits may build up. After several tries it started long enough to driver to a local mechanic.
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