I have white smoke/vapor that comes out of my exhaust, and am putting as much coolant into the radiator as gas in the tank. Car is a garaged summertime show car, not my everyday beater. My oil looks normal to me (i.e., doesn't look like a chocolate milkshake color at all). Could it be a blown head gasket...or what else could it be? I suspect the white smoke is vaporized coolant since there is no coolant leaks underneath. I am planning on getting the radiator pressure tested soon, followed by a head-leak test. Any advice to offer? I have received quotes for a head gasket fix for $3000 which has led me to look into the liquid fixes too (like Thermagasket & Steel Seal)..... I am weighing all options at this point, & I'm all ears!
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Re: Blown Head gasket (1989 Toyota Supra Turbo)
I think you have a bad head gasket too. It's leaking coolant into the combustion chamber. If you pull out your spark plugs one at a time you will find one plug that is very clean. That's because when the coolant vaporizes, it gets the combustion chamber very hot, thus cleaning the plug.
You must replace the head gasket. I would think you could get it done for $1000.00 at an independant shop. Call around to several shops to get estimates.
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Oil in coolant, white smoke at start up = blown head gasket or cracked cylinder.
White smoke is water vapor from coolant. Only at startup indicates a small (extremely small) leak -- it will get bigger. Only at startup is because as engine cools it sucks water into cylinder. A compression check will tell you which cylinder is the problem (could be multiple)
Do a compression test and look for symptoms of head gasket problems. If the leak is internal, then the most common cause
is a worn head gasket. Water (or coolant) leaks internally through the head gasket reaching the cylinders where it gets vaporized. Symptoms
are coolant fluid level going down (with no external leaks), bad performance, loss of
compression, overheating, white smoke from
exhaust because of vaporized coolant, traces of fuel in coolant reservoir etc.
If there is no head gasket problem and there is no overheating, then the leak is external. Check pump, radiator and coolant lines.
Actually is sounds more like a blown head gasket or intake gasket. The white smoke is probably water.. and my guess is your coolant reservoir tank is dry or soon will be.. and the next thing will be overheating. The water is getting into the combustion cycle and turning to steam as it blows out the exhaust. Hence white "smoke"..
The loss of compression due to the gasket leak on one or more cylinders would account for the loss of power as well.
I was not aware this model came with turbocharger.. unless an aftermarket one was added.
A good shop will do a compression check and identify if it's the head or intake gasket.
possible blown head gasket. Put in gear with your foot on the brake and rev up to see if there is vapor coming out the exhaust. Also remove radiator cap and run engine to see if bubbles come out of the radiator. Either of these would indicate a blown head gasket or possibly a cracked head.
Typical symptoms of a blown headgasket may include: -bubbles of air coming up into your radiator (remove cap before starting) -leaking radiator -milkshake colored oil -overheating -rough running -coolant or oil running from head -spark plug(s) that have a green tint (if green coolant). -white colored or sweet smelling exhaust, white smoke of your tail pipe, or loosing coolant through your overflow
white smoke usually indicates the engine is burning oil or its burning coolant. when the engine is cold remove the radiator cap and start the vehicle, if it immediately begins to blow air and or coolant from the radiator you most likely have a blown head gasket, if not then remove the oil cap and feel for air coming out. if it blows kinda like a hair dryer then you most likely have a piston ring issue and you are burning oil. either way you may be looking at major surgery to repair.
you have either a blown head gasket or cracked head. The white smoke is coolant passing through the engine and exhaust. The gas smell is from compression leaking past the gasket or head, pushing fuel vapor into the air.