considering that your numbers are healhty according to service manual, wouldn't that rule out the possibility for a head gasket leak/crack??.
I'm in similar position.
my compression numbers look like yours. did you end up doing the leak down test? I think I"m going to do a LD test tomorrow...
The Avalanche/ Taking off on the Pan-American highway soon
saved her from a towing yard. purchased her for a little over 1k and It's been quite the journey... we've been on these past 4 years...
"The Avalanche"
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