How To Compression Test?
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Remove all spark plugs, remove fuel pump relay, unplug both coil pack connectors. Screw hose with correct end(it will match spark plug threads) into spark plug hole and connect the gauge. Read the gauge while somebody cranks the engine for you. While they are cranking, they should have the throttle slightly cracked open. Let the engine spin three times(the gauge will jump 3 increments) and that is your reading.
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