I’ve been useing a block tester a lot lately to test for failed head gaskets. After a compression test you can do a leak down test also. There should be videos on all these tests on youtube.
Yeh, I suppose the block tester would be the smarter route for immediate results on whether or not a head gasket is failed. brian and dreamer are on it! Then mebbe a compression test if you get nothing from the block test, ‘cuz head gaskets wont always leak into the water jackets.
That’s true, gotta make do with what you have sometimes. I know some of the parts places rent the block tester, not so sure about the compression tester – although i think a compression test or leakdown test is the way to go.
A vacuum gauge really won’t tell you much as far as a head gasket issue is concerned, as suggested a ‘block tester’ would be the way to go to check for that, I show how to use one in this video. http://www.youtube.com/watch?v=hUzOTnsWImI