Re: HA's 52 200 Grey Ghost

Posted by Hans Ahlness On 2014/8/31 18:20:28

Any wise-ness is welcomed here, Mark! Even wise-a**edness will work, never know what will spark an idea.

I thought of the water pump and generator too, but I had the knock when I first ran the engine with no belt, so those weren't in play. Just had the water pump rebuilt too, although that doesn't guarantee anything (like that stupid oil pressure gauge). And the lifters are hydraulic, and when I looked all that over when I had the valve covers off they all were free, rotating, and seemingly tight. Plus they did rattle when I had taken the oil pump apart the other day, quickly quieting when they got oil. But there could be one still not pumping up, couldn't there.

What's the best way to narrow down which, if any, lifter might be making noise? Play doctor with a stethoscope?

How about wrist pins? What kind of noise would they make if loose or broken, and how to diagnose?