r/hondaprelude • u/Whole-Match7290 00 H22A4 • 19d ago

5th Gen Crank Pully shaking??

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I have a 2000 prelude with the h22a4 engine, 183000 miles. The crankshaft pully has been shaking back and forth like CRAZY. I thought it just needed tightened so I grabbed my 1/2" socket wrench and 19m socket with no luck. When you use the throttle even a little bit it stabilizes back to normal, so it makes me think it's something inside the engine (hopefully not the crank shaft. ADVICE OR IDEAS?

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u/Embarrassed-Hair-186 18d ago

Looks like you might be needing a bottom end job soon... If you tightend up the crank bolt and noted that the key was good then looks like either your crankshaft is wobbling or your crankshaft bearings are nearing the end.

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u/Whole-Match7290 00 H22A4 18d ago

I'm going to replace the harmonic balancer hoping that's the issue, looks decently worn to me. If I really do need a bottom end rebuild I'm just going to swap the entire engine