Originally Posted by
Empire
yeah, but a compression tester isn't going to narrow it down to the headgasket... that will also point to vavles and seals and all that fun too..
a leak down test is the only way to test for it, at least accurately....
Sure, bad compression won't narrow it down to just being a head gasket, but it will start to eliminate the variables. Combine a leak down witha compression test and really narrow it down, But, if you really want to know if it's the head gasket thats causing your issues then you'll just have to pull the head.