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turbohead7 turbohead7 is offline
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Join Date: Oct 2002
Location: Lawrenceville, NJ
Posts: 97
Post Compression Test Procedure

Here you go dude:
1: Make sure car has a healthy battery, and engine is warmed up.
2: Unplug fuel pump fuse and run car until it stalls, this will clear the fuel rail, leave fuse out for remainder of test
3: Block throttle plate wide open with a screwdriver.
4: Remove the plugs and air cleaner (preferably)
5: Insert compression guage into corresponding cylinder*
6: Crank engine over until guage shows no further rise, usually 4 or 5 compression strokes.
7: Record readings as you go for comparison, the lowest cylinder shouldn't read 10-15% below the highest cylinder.

*Make absolutely sure that the compression guage fitting is the same length as the spark plug threads!
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Old 05-25-2003, 10:05 PM
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