While changing plugs a small piece of metal (probably the head of the bolt that holds the plug wire harness in place since one is broken off) was apparently in the plug tunnel hole from the last plug change. I didn't see it and it unknown to me it fell into the engine. When started it sounded like marbles in a blender. Pulled the new plug and found the tip bent and the ceramic broken. Tried to fish the piece/pieces out but the damage is apparently done. Compression 135 on that cylinder and 155 on the other three cylinders. I believe the valves are damaged. Piston looks okay from plug hole but what are the chances the piston, rings and cylinder walls are not damaged. How much scoring would be acceptable? Am I looking a new engine or just the head redone? It was a costly spark plug change. Could the injector also be damaged as it was idling okay when started but died under load.
have the same problem?
Thursday, November 24th, 2011 AT 4:25 PM