Originally Posted by Streetz

The only real way to confirm a head gasket failure is to check for hydrocarbons in the cooling system. All the test listed above are signs of a head gasket failure but the only true way to confirm in hydrocarbon test. Very easy to use. If you google "Block Tester BT-500 Combustion Leak Test Kit" it will bring you to an Amazon link. only 36.99


If your in CAL i would take the car to See at specialtyZ. I've been in the performance industry for a long time and there are very few shops i would recommend. Seb won't disappoint you.