Compression and leak down test
Senior Member
Joined: Jan 2003
Posts: 1,994
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Get a compression tester, it's like a pressure gauge that goes in the spark plug hole. Warm up the engine completely, take out all 4 spark plugs, pull fuses or whatever to disable fuel & spark. Put the gauge in one plug hole, hold the gas pedal all the way floored, crank the starter until the pressure quits climbing. Then do the other cylinders.
A leakdown test uses a tool that's kinda like a pressure regulator, gauge, & connection for compressed air into a spark plug hole. It'll probably have instructions...
A leakdown test uses a tool that's kinda like a pressure regulator, gauge, & connection for compressed air into a spark plug hole. It'll probably have instructions...