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Old 03-04-2021, 09:30 AM
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cmac2012 cmac2012 is offline
Renaissances Dude
 
Join Date: Dec 2004
Location: Redwood City, CA
Posts: 33,916
There's a lot I don't know but my general impression has been that if a diesel has good compression, messing with pistons and rings can bring grief. The logic I've heard is that most shops can't do the same quality work as the factory. In your case you're pretty sure the poor compression is not from pistons/rings.

All of what you mention can be done w/o pulling the engine ... I think.
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