LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Misfire on Cylinder 2

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Old 04-14-21, 09:24 AM
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alfin
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Default Misfire on Cylinder 2

I have replaced all the spark plugs and coils with NGK, replaced both OCV's, and had the ECU rebuilt with all new capacitors, and now I am getting an error message of misfire on cylinder 2. Any ideas of where to look next? Before I had the ECU rebuild done, it was misfiring on cylinder 7.
Old 04-14-21, 10:27 AM
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bradland
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Originally Posted by alfin
I have replaced all the spark plugs and coils with NGK, replaced both OCV's, and had the ECU rebuilt with all new capacitors, and now I am getting an error message of misfire on cylinder 2. Any ideas of where to look next? Before I had the ECU rebuild done, it was misfiring on cylinder 7.
How did the plugs and coils look when you replaced them? Were any covered in oil?
Spark plug tube seals often cause misfires when they fail and can potentially kill a newly replaced coil if not addressed...
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