Originally Posted by Joe_Black
I know, that's what I thought at first since that's what I'm familiar with as well from my FIAT/Lancia and Kawasaki DOHC experience. Apparently, and this is according to Isuzu service information and not my actual under-hood experience, our engine has hydraulic self-adjusting "lash caps". I'm about to have lunch with a friend who owns and operates a local major repair shop and will have more info then.
UPDATE: Apparently there is a such thing as a self-adjusting hydraulic tappet bucket for direct-impinging OHC and DOHC applications. When home later I'll look in the service manual for more info.
I have looked in the manual and I am finding nothing about this. It looks to me that this is not the case and they are not self adjusting. But I am not 100% positive. If they were self adjusting hydralic there would be no valve noise. You can notice a big difference between hydraulic and and solid lifters, I would think that this would be the same. shawn
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