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Misfire count, knock retard. How much is too much?

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Old 05-10-2012, 11:12 PM
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Default Misfire count, knock retard. How much is too much?

So I've been playing around with an OBD logger, torque app http://torque-bhp.com/

And noticed after a few runs that cylinder 7 and 8 had a misfire count of 2-3 while cylinders 1-6 were fine. Additionally I pulled .04 of knock retard.

5.7 LS1 with 50K on the clock

Just curious what kinds of thresholds I should be looking for on the knock retard and cylinder misfire count.

Thanks guys
Old 05-11-2012, 09:30 AM
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All those are more than ok, nothing to worry about.

If you had 1+ degrees of knock you might want to fix it. If you had more than a handful of missfires you might want to fix it.

But sometimes even well tuned engines have a missfire here and there or a slight spark knock.
Old 05-11-2012, 11:23 AM
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Originally Posted by redtan
All those are more than ok, nothing to worry about.

If you had 1+ degrees of knock you might want to fix it. If you had more than a handful of missfires you might want to fix it.

But sometimes even well tuned engines have a missfire here and there or a slight spark knock.
Cool. thanks man, really appreciate the info.



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