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Originally Posted by jveik
yeah compression prolly aint the only factor. My carbed 350 used to diesel a lot when i would shut it off until i fixed the timing. I know that engine couldnt have had more than 8:1 compression, its an emissions-era 350 for God's sake lol
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When a gasoline engine diesels it isn't caused by compression it is caused by a hot spot in the cylinder(carbon deposit). If your idle is too high or maybe if timing is bad when you turn off the key the engine still turns drawing in fuel because carbs do that, and the hot spot in the cylinder ignites it.
FYI A diesel only compresses air(direct injection) When the piston moves up on the compression stroke, there is only air in the cylinder. Just before top dead center, fuel is injected into the compressed air and ignites.
As for this fuel vaporization, Cody, is your vehicle fuel injected?