I know this is an old topic. I'm just having the problem. You had code P0304. But fixed rocker arm on Cylinder 3? Is that right?
1995 Mustang 3.8 Cylinder 4 Misfire
G
Somebody please tell me where to go next. Scanned code P0304. I have swapped plugs, wires,fuel injector and the coil. I still have the same problem and dont have the money to just throw parts at it.
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