× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: 2008 Chevy Trailblazer 4.2
Posted to Technical Discussion Forum on 2/3/2019 1 Reply

Had a lot of these with valve issues. You can do a leak down test. I have also found watching the 1st puff on a compression test useful. Login to read more.

1 Replies Received (View Replies)