Compression testing
Compression testing Can someone tell me which relay or fuse to disable so i can crank the engine over with out it starting. I want to test compression in a cylinder.
I have one cylinder that the threads on the spark plug are oily. I think its causing a misfire at idle. The plug doesn't really look fouled though just oily threads. Its number 8. I also notice the engine has a funny knocking noise when it misfires at an idle but only if its in gear. If i give it any throttle the knock goes away??? odd huh?
I have one cylinder that the threads on the spark plug are oily. I think its causing a misfire at idle. The plug doesn't really look fouled though just oily threads. Its number 8. I also notice the engine has a funny knocking noise when it misfires at an idle but only if its in gear. If i give it any throttle the knock goes away??? odd huh?
Teching In
Joined: Jan 2008
Posts: 3
Likes: 0
I got the same problem. My 7 is missing and 8 starts after 7. At idle its bad and sounds worst then when im driving or on the gas. Ive posted a thread on the canadian forum, let me know if you figure something out, ill do the same.
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Verdad Gallardo I just disconnected the 2 coil pack harness. There's one large connector on each side, right in the middle of the valve covers. I also removed the fuse to the fuel pump. Just like slayerized6 said. ...and block open throttle.