V6 (1994-2004) MustangsTechnical discussions on the 3.8L and 3.9L V6 torque monsters Sponsored by Optima Batteries
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changed the gasket no more water in oil, 3rd bank on coil sometimes has no fire from it and when it does t doesnt change the way motor runs when u pull wires, so im guessing coil is bad and what would make it not change motor when pulled off????
If you replaced the coil what brand did you go with? Motorcraft coils are the only ones that work properly. Also with the plugs, if you put in platinums, that can be a problem too as platinums suck. Just get some NGK TR-5's. If you have a broken spark plug, then you probably have either piston or valve damage, or both. I'd recommend pulling the head/s just to make sure. It sucks to have to do it, and it'd not cheap for all the bolts and gaskets, but at this point it's the only way to be sure. I've seen heads eaten to **** from a spark plug breaking.
I highly doubt it's a timing chain issue, merely because those of us who have put our cars through the most abuse have yet to have an issue. If it breaks it breaks, and the car won't run.
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