False knock and misfire reading

False knock and misfire reading

Postby Ktunerfan » Wed Oct 10, 2018 12:08 pm

The only time I ever got a knock showing in datalogs was at engine startup. During the same startup it showed a misfire on cyl 2. No codes and nothing seemed or sounded wrong. The rest of my drive no knocks or misfires. This happened on another datalog only at startup. No codes. Knock count of 1, and no knock count during the drive. Car drove great.

What would cause this phantom stuff?
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Re: False knock and misfire reading

Postby KTuner » Wed Oct 10, 2018 1:07 pm

Knock count isn't what to watch on this platform, but most platforms may see startup counts.

Keep an eye on knock control instead. This is where your actual movement will be seen based on noise.
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Re: False knock and misfire reading

Postby Ktunerfan » Wed Oct 10, 2018 2:17 pm

Why would it show a misfire when it's pretty clear there wasn't one?
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Re: False knock and misfire reading

Postby KTuner » Wed Oct 10, 2018 4:20 pm

We're showing the data that the ECU reports. Honda would have to elaborate on why they programmed it to do so.
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