Fuel injectors in the BMW N55 engine are also prone to sticking open. This is usually a result of faulty head gaskets or cracked cylinder heads or blocks. Un-burned fuel travels through the exhaust system & exits out the tailpipe which will produce a scent of rich, un-burnt diesel. Faulty fuel injectors are also known to cause white smoke. Maybe a lower injector o-ring split! If an injector is stuck, the corresponding plug will be wet with gasoline. 2. Stuck Open Fuel Injector (how to fix) Print 2001 Dodge Grand Caravan 3.3 with a #5 injector control wire shorted to ground. The injection pump has rebuild tags on them. It might be a small problem, it may be the beginning of a huge issue, but either way, a quick reaction will ensure that the engine life is not compromised and that the costs to you are not unnecessarily high. We’ve been doing this since 2009, and have seen just about everything when it comes to failing fuel injectors. At PCE, we pledge to provide you with the highest level of integrity and expertise; to recommend only what’s good for you and your situation; to use all resources possible to minimize downtime; to give the best value for your dollar; and to stand by our work and our word. from my understanding the smoke is usually a red flag for injectors, but being white smoke could also either be a headgasket or a leaking injector cup. If an injector is stuck, the corresponding plug will be wet with gasoline. If the injector high-pressure connector tube or feed tube is not seated in the injector, the issue is a bad tube or there is an improper torque set on the nut, which should be a final of 37 ft. lbs. But that is from when it was rebuild 4-5 years ago and then just sat in a coner of a shop. 1. my truck is doing the exact same thing and i have one injector stuck open and possibly two more that are bad. ... (white/grey) smoke on a cold start. When the needle valve is opened, fuel under enormous pressure is sprayed into the combustion chamber. If one injector is not flowing as it should or is stuck open, it might cause a rich mixture in your engine. San Diego Small Business Marketing Services. 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. It could be, a poor connection or wiring problem … The entire fuel system will need to be … Started up and ran great but gradually started to smoke and within several minutes was pouring out big volumes of greyish white smoke. The white smoke is a result of combustion temperature in your engine being too low. If you do not see smoke from the tailpipe after about 10 seconds of cranking it means there is no fuel getting into the cylinders. You went to the dyno and can't tune the A/Fs out of the 7:1 range and the number 1 reason you know you have a stuck open injector is: You just blew the headgasket and your coolant smells like gasoline! But its not going to explain the white smoke. Can an injector really spew that much fuel from such a tiny hole ot cause a hydro lock? The fuel injector(s) are controlled by the injector driver(s) in the ECM (engine control module). More than likely it's an injector nozzle spring that let go on you and hung open and then finally released and let the nozzle close. But was still blowing white smoke/mist, and when placing hand behind exhaust it got wet and smelled like fuel. In general, fuel injectors are hard wearing and with a little care, can often last; the life of the engine. When the nozzle needle stuck in the closed position, there will be a regular in the vicinity of the cylinder head knocking sound, which is due to fuel injection pump when the pressure wave shock caused by the injector. Regular diesel engine maintenance should prevent these situations from ever occurring, but be sure to note any change in the behavior of the engine. This usually makes an engine a lot louder than normally. this jetta lost most engine power. Think about the problem, what types of things could cause a no start on a diesel vehicle? Could be either an injector o-ring which is unlikely since it cleared up. The fuel injector is responsible for injecting fuel into the internal combustion chamber at the exact right time. Plus, makes "black" smoke come out the exhuast. black smoke means lack of air ! Broken or leaking valves are among top causes of low compression, but far from only culprits. White smoke coming from the exhaust usually points to one point of failure: the injectors. The commonest cause of white smoke is likely injector pump timing. A sooty tailpipe indicates the DPF has failed. What do diesels need to run and start? Faulty injectors - stuck open. From the description you have provided, your vehicle has an open circuit code on the #3 fuel injector, is going to require circuit testing. A thick cloud a white smoke. If you want to be 100% certain what the issues are, a visit to a professional mechanic is always a good idea. Similarly to the fuel injectors, … The engine with a faulty fuel pump will be a lot quieter, but it will also have a lack of power, often stuttering when revved. Here is a guide to test to make sure this is the problem. Worn and damaged injectors are often the cause however there are other causes and considerations that should be looked at prior to injector replacement. White smoke often occurs when there is either too much fuel being injected into the combustion chamber, or not enough heat to burn the fuel. yes it is eye burning smell from the exhaust. Are you absolutely sure the injectors are being held open constantly on the rear bank? In many cases, white smoke emanating from the tailpipe (often at idle once the engine reached operating temperature) typically means a worn out injector. white smoke means dumping fuel ! This occurs when the fuel injector does not spray the appropriate amount of fuel into the combustion chamber. Blue or blue/white smoke: Caused by insufficient fuel or oil consumption. You can learn more on our injector testing equipment page, and we’re always happy to provide an accurate assessment of your injector performance, and honest advice on your best repair or replacement options for your budget. Water is being introduced into the combustion chamber. Be careful of white smoke as it will irritate your eyes and skin. If you were to have a bad fuel injector , then it would cause white smoke to form because the proper amount of fuel did not enter the chamber at the right time. Conditionally on temperature and altitude, it would be normal if in less than a minute the smoke clears. That's where i would start anyways. Note: grey/white smoke may indicate an injector is stuck open and spraying fuel into the exhaust but not atomizing it which is necessary for combustion. In order to function properly, a diesel engine needs precise timing of the injector pump and high. The smoke is enough to stain the rear bumper, and it's a dry white powder (no oil residue from what I can see). It is white smoke… on Does White Smoke Mean Injector Problems? Lots of white smoke and engine light on. Check the coolant level in the reservoir. Blue smoke is normally the result of engine oil entering & burning inside the combustion chamber. I have replaced the injector because one was sticking. Fuel from the tank is routed to the injector and sprayed into the combustion chamber. A dead fuel injector is an injector that does not have resistance and does not respond to electrical input.They act the same than a clogged injector. Usually, white smoke indicates that the diesel fuel is not burning correctly. Bad Injectors I would like to assume that there is a bad injector, stuck open. During really cold weather, it is reasonable to expect some, but an engine running at full power should show no visible smoke. :frown: This action will result in poor gas mileage and will trigger a rich code. In a worst-case scenario, damaged fuel injectors can also produce black smoke. White smoke from an LB7 Duramax engine often indicates faulty injectors. In a gas motor I would say it is a rod / bearing knock. Read the 7.3 IPR article – 7.3 IPR – Injection Pressure Regulator 7.3 Powerstroke Common Problem #8 – Overheated Engine During really cold weather, it is reasonable to expect some, but an engine running at full power should show no visible smoke. so they are all new. As mentioned above, a problem in this component can lead to an issue in the air-fuel mix. It sounds like you have an injector stuck open, sometimes a wot run will help unstick it, but be careful because you could burn a hole in a piston if it keeps over fueling. So what you might take for a bad fuel injector sound, can at times refer to bad spark plugs for example. One or more cylinders are not firing. Any time you see a change in the behavior, you need to address it. White smoke coming out of tailpipe . it started knocking. But a stuck injector can cause misfiring, if stuck open, it will keep draining gas when the engine is off, until the line is empty...and this makes the engine a bit harder to start. White Smoke Indicates a Faulty Fuel System: Time for a Fuel Injector Service, The key of longevity for any engine is regular maintenance. 3. The engine can burn more fuel than usual. This problem … P0266 Cylinder 2 Contribution/Balance Fuel injector flow rates, atomization and distribution are affected and this can cause all sorts of drive-ability and performance problems. Decision was to upgrade the turbo intake clean and replace injectors for starters, all was booked in and was replaced, you can now notice massive improvements with av fuel after 3 tanks is 650km I'm very happy with that … Similarly to the fuel injectors, low pressure in the fuel pump can also lead to white exhaust. This usually makes an engine a lot louder than normally. White smoke in the exhaust after the engine warms up indicates excess free …

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