Quote:
Originally Posted by cooper barrett
Did you do a compression test
A trick i used to use to test the Cat was to remove the O-ring from compression tester and screw it into the cat. I think that normal back pressure was about 10-12psi.
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I did one a few months ago that came back normal. I was thinking of doing another, but decided against it due to the fact that the issue is affecting all of the cylinders.