Rough idle
#1
Rough idle
Ok last week my car started running bad had a friend come out put it On a scanner to see what the problem was it said number 4 cylinder air fuel mix I forgot the code it gave He told me to go get new coil packs so I did and new spark plugs all looked clean but #4 did have a little yellow oil or something on it after replacing coil packs and spark plugs car ran great for 10mins now running bad again. Please help?
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