A blown gasket need not necessarily mean a drop in compression. The gasket could have developed only a very minor leak and that would not show much differences on a compression gauge.
Use a clear bottle filled with water and dip a hose in it and atttach the hose to the overflow outlet joint from the radiator. Start engine and let it run, if bubbles keeps coming out of the hose, you know thw gasket has a problem.
Head gasket for this vehicle is metallic based so it would not leak as badly as with carbon based gasket.
Wednesday, August 12th, 2015 AT 6:40 AM