[John_AZ]

A leak test would give your the best indication. You said you have pressure in the coolant reservoir. This is THE indication your HG is bad. The leak sown test will show bubbles in the tank and you can pinpoint the cyl. I had the very same compression numbers. My HG was bad.

Very easy job! Do a lot of additional stuff. Replace the AOS seals, vac lines, any hose under the intake manifold, the heater control valve, new belt, new cam bolt, clean the idle control valve-ICV, check the "J" boot for cracks, replace the ICV rubber mounts, change your coolant. Before you start use a little SeaFoam to clean the engie and lifters. Then change the filter and oil. Take your time in removing the old gaskets. No scratches in the soft block. Clean the coolant gallys between the cyl. Do not remove the carbon on top of the cyl wall. Check your cylinders for scratches that catch you fingernail. If not bad just ignore. MORE...

How is that for a runon paragraph?

GL
John_AZ
1988 924S + 1987 924S