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The oil should be pumped into the oil journals in a second or two. If you still have rod knocking, you still have problems. It could be piston slap or any of a number of problems, but rod knocking is most common. Have you checked your oil pressure? If oil pressure is up when the engine is running and the knocking continues, it's not a crankshaft problem.

2006-10-25 04:31:00
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Q: You changed the crankshaft on a 1989 z24 but the knocking noise wont go a way you talked to a mechanic and he told you to wait until the oil goes back up three days pass and the noise is still therean?
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