Quote:
Originally Posted by MR2Jedi
White smoke usually indicates burning coolant.And it usually smells kinds sweet. Oil is a bluish white, smells of oil and will sometimes leave soot in your exhaust pipe.
|
Soot is mostly black carbon from burning gasoline, which is a hydrocarbon chemical. The richer your engine runs, the more soot it'll produce. I get a ton of it on my 1GR Tacoma; probably because the A/T likes to keep the RPMs so low it lugs the engine.
On my other N/A MR2, the oil was blowing past the rings so bad, oil droplets were actually present on my rear bumper (unburned). 10k miles later, the engine nearly threw a rod, but I expected it. It was going through 1 quart of oil every 500 miles.