Marine Engine Compression Test - Volvo Penta 7.4

Here is a quick tutorial on how to do a compression test on a marine (or any) engine. In this video I will be doing a compression check on each cylinder of my 1999 Volvo Penta 7.4 Gi marine engine. This applies to pretty much any engine with slight variations. This should be done annually to check the health of your engine.
Tools Required:
- Spark Plug Socket (mine is a 5/8")
- Ratchet with extension
- Compression tester (available at any auto parts store)