Chasing PO300 Misfire-Log File Attached
#1
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Chasing PO300 Misfire-Log File Attached
Howdy. I've been having a misfire at all speeds and rpms in my truck. It seemingly gets worse under load. It has new (factory iridium) spark plugs and Denso O2 sensors. Fuel is 55 psi with key on/engine off and just over 60 running. I just cleaned the throttle body as well. This came out of the blue... Do y'all see any clues as to what it could be in the log file? Thanks.
-Andrew Kitchens
-Andrew Kitchens
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The tune is locked. I have an autocal, but my problem is trying to get the misfire counter pids to work on efi live scan and tune. I'm looking around for a tutorial currently.
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That would narrow it down to #5 and #7 plug wire. I have Obx headers with the stupid hump... Though, they are wrapped and the wires pulled away. Thank you much for the help, sir!