Thread: Pressure in motor - knocks when I shut it off

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Not to be a smart-ass here, but are you sure the engine isn't still turning over with the key off? High comp engines will "diesel" for a while with no ignition sometimes, and make one hell of a knock.

Originally Posted by R Pope

Not to be a smart-ass here, but are you sure the engine isn't still turning over with the key off? High comp engines will "diesel" for a while with no ignition sometimes, and make one hell of a knock.

I'm the same way, R Pope. Mike, when you had your ear down by the block did you glance at the belts/pulleys and see that there was no rotation? Sounds like you're describing diesleling to me.