#7 misfire
October 7th, 2011, 1:09 PM
#1
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#7 misfire
Tahoe started running rough this weekend. Last night the CE light came on and coded for #7misfire. I swapped out the coil pack with #1 and reset the light. This afternoon the CE light came back on, again misfire #7. Is this a spark plug and wire issue or is there something else I can check?
All wires and plugs were changed less than 25k miles.
All wires and plugs were changed less than 25k miles.
October 7th, 2011, 1:23 PM
#2
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I would walk all three items to the opposite side of the engine.... but yes it could be a plug and or wire....might try running some injector cleaner thru also..
did you replace them with OEM or aftermarket plugs wires?
did you replace them with OEM or aftermarket plugs wires?
October 7th, 2011, 2:08 PM
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October 8th, 2011, 2:20 PM
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replaced #7 spark plug and let it idle for about 5 mins. so far no misfire. This is what the old spark plug looked like after 23k miles. Is this caused by excessive oil consumption?
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