An expert who has achieved level 3 by getting 1000 points
An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.
An expert that got 20 achievements.
An expert that got 10 achievements.
Re: black smokes & floods at times while driving
This is most often caused by a defective engine wiring harness, it gets breaks in the wire inside the wires insulator, very hard to track down, bend the harness where it goes to the engine, see if u Can make it act up.
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
When the head gasket fails on a liquid (water) cooled engine the typical smoke colour is white (steam) and that becomes rather underlined by the steady drop of the coolant level and often clear evidence combustion gas is leaking into the cooling system.
Smelly black/grey smoke tends to be produced by an over-fuelling condition such as a stuck choke or strangler or other cold starting aid or perhaps carburettor flooding.
Blue or blue/grey smoke is invariably engine oil burning but I suggest you ignore that until the black smoke problem is rectified and after a short time the blue smoke might also disappear. If it doesn't it could be related to the overheating but the black smoke probably wasn't caused by that...
There are many reasons for black smoke. This color indicates incomplete combustion of the diesel fuel. Possible injector or injector timing problem would be the first thing to look at. Other causes can be a defective turbo... air restriction... engine running too cold... internal issues to name a few
Most likely the engine cylinder head gasket has blown causing oil and coolant to flood the engine and cause smoke. This will prevent engine from starting. Looks like a big job ahead to fix. Try not to keep cranking the engine as the pistons could seize inside the engine cylinders. I hope it is not as serious as I may have made out to be. Please tow the car to mechanic asap.
One thing used many mechanics for diagnosis is: What color was the smoke? White smoke usually means the engine is failing, and can indicate a leaking head gasklet, a cracked block, or a cracked head. This color smoke is from water and/or coolant getting into the cylinders. Black smoke indicated too much fuel, and the engine may be "flooded", indicating a less expensidve fix. Grey smoke indicates oil smoke from worn rings or worn valve stem seals. The white smoke says you should have someone look at this really quickly to see if immediate attention is needed. Be blessed
If you are sure you have a spark to at least half of the plugs, and there is no reason to suspect that the engine was being used abnormally just before it was shut down then it is most likely flooded or you ran out of gas.
Black smoke from the tailpipe indicates that the engine is getting a fuel mixture abnormally high in fuel (flooding). White smoke generally indicates not enough fuel.
Unless your engine is damaged or the timing changed, your engine will run if it has the following: proper fuel mixture, air, a spark to at least half of the spark plugs, and compression.
For a "flooded" engine there are two routes. Wait until the excess fuel has had time to dissipate or hold the accelerator to the floor while attempting to start. Be prepared to let off the accelerator about halfway as soon as it starts. And then down to about 1500 rpm. You do not want to over rev the engine. But holding it at about 1500 rpms for about 3-5 seconds will help flush out any excess fuel. You can then slowly return it to idle speed.
Your getting backfires? hmm interesting. Seems like your engine is getting flooded and either purging it out of the exhaust or burning it all at once or both (backfire). Sounds like a leaky engine valve to me.There again the bluish smoke indicates to me thatyou are leaking oil somewhere- bad rings or head gasket maybe, which could cause a loss of compression which could also cause your problems.That rattling from the left/rear side sounds like a bad muffler try kicking the muffler (not hard though) next time you walk by it.
There are two differnt reasons for black and white smoke coming from the tail pipe.
Black smoke means fuel runs rich (car getting to much gas). Check fuel pressure/air filter.
In some cases the white smoke means car is burning oil or transmittion fluid. Have tem checked/replaced.
If you can feel a smelly smoke it can be catalytic converter.
In a worsest scenario if car blowing white smoke it can be engine coolant is getting into an engine cylinder from a bad head gasket ,or a warped/cracked head. So you need to keep your eye on coolant level and check your engine for overheat. Also might be good to check your oil for traces of coolant (on a dipstick it would be a milky substance mixture of oil and coolant).
hey there are couple of smoke type.blue smoke is oil, black smoke is fuel, and white smoke is
water, if it clears after starting and running a few minutes it's probably your
valve guide seals leaking oil down on top of your pistons, causing it to smoke
until burned off and foul your plugs.