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ThaddeusW

How Does One Test For Cylinder Compression?

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Ok on a gas engine you just unscrew a spark plug and thread the gauge into the plug hole. On a diesel I assume that you have to pull an injector and bolt in a special adapter correct?

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Ok on a gas engine you just unscrew a spark plug and thread the gauge into the plug hole. On a diesel I assume that you have to pull an injector and bolt in a special adapter correct?

You are correct Thad.

A diesel compression tester gauge is of a higher reading, (usually 1000 psi) also, as opposed to the gauge used for a gasoline engine. I'll post a picture of mine later this evening when I'm back at the shop. I paid 169.00 for a kit to do most heavy diesel truck engines by S&G Tools from a wholesale tool outlet about five years ago. It has about eight different adapters for different engines.

Rob

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