Revision as of 18:23, 31 December 2006
Sometimes you just need a specialty tool. It can save time, or money, or in some cases mean the difference between doing it right or wrong.
Also see: Sears.com Mechanic's Tools
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Compression Tester
See: Engine compression test for how to use it.
This kind has both a screw-in fitting and a push-in fitting. With the long part you push it into the spark plug hole, then crank the engine.
With the screw-in fitting it is easier (you don't have to hold it in place). You can usually place the gauge on the engine top and view it through the windshield while sitting in the the driver's seat.