Quote:
Originally Posted by thegipper
I suggest you do a leak down test and forget all of the other methods. A leak down test is the gold standard for testing for a bad HG among other things. I have one of those dye test kits and it never once even remotely changed colors even though I had a blown head gasket (granted it was a minor leak).
Once I did a leak down test and pressurized cylinder #3, air bubbles came out of the radiator. This is how I 100% confirmed I did in fact have a blown head gasket. Either pay to have one done or if you have an air compressor, you can buy a leak down test kit for around $60.
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I agree with Mike but I would first do a compression test of all the cylinders and would then follow that up with a leak down test of any cylinder with a low value to find out where you're losing the compression.
