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Re: Blueish white smoke comeing from exhaust
White smoke when first started is normal. If white smoke continues you have an internal coolant leak, i.e., cracked head/blown head gasket.
Black smoke is caused by a rich fuel condition.
Blue smoke is caused by oil consumption.
You need to check your oil cap for yellow/white gunk on the cap if you have this then this is a sign your head gasket is cracked. Check to see if your radiator coolant level is down this is also another sign.
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White coming out the tail pipes is coolant/water. Doesn't mean the head gasket is blown, but you'll wish it was. Could be a cracked head. They can crack inside the intake or exhaust port. This would still give you a good compression reading. If in the intake, you would have a misfire. Exhaust you wouldn't. As far as the blue goes. It is mostly white in color, with a hint of blue color. Loosing that much oil would be a major leak or the rings are shot. Rings being shot, you would see that blueish tint in the smoke.
This widespread problem is the one part no one thinks of: ENGINE VACUUM PUMP.it runs mechanically off camshaft;once seal leaks,oil from camshaft housing enters vac oump and becomes ingested by engine,therefore exiting tailpipe,water accumulation in by product of catalytic converter changing smog/carbon to water/vapor.REPLACE VAC PUMP AND SEAL ,SMOKE WILL STOP!!!!
THe heat and air has nothing to do with the exhaust, It is either burning rich, burn your eyes? Or it is blowing steam out from a blown head gasket, check the top of the radiator for oil an check the oil for water. A radiator shop can do a comp check, do not let it over heat, it could go months before finally stop running. Check again and make sure it isn't a blueish smoke, It would be oil. Whole different story.
Is the white smoke steam or water? If so it is a blown head-gasket. Fix ASAP or you will ruin the engine. Or is exhaust blueish/gray or gray and smells like gas or oil. If this is the case then it could be a fuel injector, spark-plug (or no spark to plug), valve seals, piston ring/s, or clogged air filter.
Blueish smoke is probably excess fuel. If this is the case, the exhaust should smell gassy. I'm thinking that one of the injectors is leaking...something injector cleaner wouldn't solve (you may have to buy a new injector if that's the case). I would check the spark plugs to see if one looks different than the others, that way you can narrow it down. I took my injectors for my porsche to www.witchhunter.com to have my injectors checked and found that a couple of them were leaking so bad they couldn't be fixed. If you send in your injectors to him and any of them are leaky/unrepairable, he won't charge you for them. :)
You will need to check head gasket. Please check the oil for coolant (milky deposition or presipitation). Also check if you loosing coolant and if coolant has oil in it.
Please kindly let me know if you need more info