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Any Idea what that tap might be? Ive heard these can tap with a plug backing out since the Gen1's had shorter threads. She hasnt been abbused. I guess it could be fouled plugs i dont see how they couldnt be fouled or dirty as hell with all the oil that was in the valley.
Its idling around 1000 now, but i noticed a tap on the drivers side of the engine.... I know for a fact the plugs are the originals and will be going through them tommorrow.... I just pray its just the plugs.. till then i wont be starting it.
The 42# injectors are noisy.... they do "tap" quite loudly.... hope thats what you are hearing.