- 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.
Where is the white smoke coming from? Under hood? Out tail pipe? If excessive white smoke from tail pipe, suspect a head gasket failure which in turn will fill the cooling system with exhaust pressure forcing the coolant to come out of the reservoir and resulting in an overheating problem
You may have a broken ring or scored cylinder wall and piston. Have a cylinder leak down test performed to confirm this. Other causes can be a plugged crankcase ventilation system causing pressure to build in the engine, if that is the case the air cleaner box should have oil in it. The grey color of the smoke means you are burning a lot of oil.
Heater control circuit is your O2/oxygen sensor which controls your emissions and keeps the car running efficiently. They go out quite frequently and need to be replaced. Wont cause any drivability issues other then lower fuel economy and check engine light. Sensors run between $50-$200 each.
Not to worry. Run the engine up to operating temp before jumping to conclusions and let the heat burn off any excess oil. A leaf will not do any damage.Do not let the engine overheat while idling and if the oil light comes on switch off immediately. The smoke from the exhaust is oil deposited by oily assembly hands just burning off. It should dissipate after about 15 minutes at most.(or 5 miles' drive)
Only three things can cause that. 1. excessive amount of fuel entering the combustion chambers. 2.oil entering the combustion chamber. 3. Coolant entering the combustion chamber (coolant steam dissipates faster than oil related smoke and can also be accompanied by dripping liquid from pipe). There are numerous reasons that can happen, all of which can be tested. Fuel problems are generally related to the engine management system in which case code testing is required with follow-up individual component tests. Oil and coolant problems can be checked by doing cylinder compression, cylinder leakdown tests and cooling system pressure tests.