Runs bad and doesn't sound to good either....
#1
Runs bad and doesn't sound to good either....
I have a 1999 7.3 that started running real rough and lost power. I had a shop pull codes and said it was from both valve covers (both sides?) What could this be and is it easy and cheap to fix? I disconnected one side outside of valve cover and it ran rougher. Can it still be the harness on both sides?
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