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What causes 1993 Chevrolet 5.7 to smoke oil under load Have changed intake gaskets and checked compresion.?
Wiki User
∙ 15y ago
There are a couple possibilities:
Check for "blowby", that's when exhaust gas leaks past the pistons, into the crankcase. If the engine has blowby it will be much worse when the engine is under a load.
Check the vacuum lines, especially the lines from the transmission. You're looking for oil in the lines. Sometimes a broken vacuum diaphragm will allow oil to be sucked into the engine. In this case it could be that the diaphragm leaks oil only when the engine is pushing the transmission hard.
Wiki User
∙ 15y ago
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check the piston rings but that a typical thing any 350 dose check the piston rings but that a typical thing any 350 dose
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