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How much smoke, lots?
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lots of smoks more like fuel vaper to me
OK, white is usually coolant that blows white, fuel is black.
I did have a problem with coolant leak but i dont understand why the exhaust smells like gas could it be cadillac convertor or something as simple as sparkplug or wires
No, I really thing this is coolant. When it is burning fuel, the smoke is black and soot.
If the conveter was bad it would restrict flow. Take all the plugs out and see if one is cleaner than the rest.
could it not be a cracked head or head gasket?
yes, that is what I am thinking. Looking at the plugs may tell us which side.
thank for you info. will take your advice may contact you later