The truck started running rough only when idling in gear. Finally got a CEL that reads PO300 - multiple cylinder misfire. Any suggestions? I have 55,500 miles on her with no plug changes. I don't drive it often and usually only for short distances on the weekend. Thanks!
The truck started running rough only when idling in gear. Finally got a CEL that reads PO300 - multiple cylinder misfire. Any suggestions? I have 55,500 miles on her with no plug changes. I don't drive it often and usually only for short distances on the weekend. Thanks!
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