fouled plug and logs
#1
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fouled plug and logs
What would a fouled plug show up on with a datalog? Would it cause knock? Reason I ask is I am expierencing a miss at idle that was not present before. Also car is knocking via the logs, and it doesn't run like it did when tuned last Feb. Also seemed to trap low for the mods and hp (280 at Buschurs) when tuned. Same pump 93 and no other mods since tune, boost leak check is negative.
Any suggestions or comments?
I can post a log, but it is a vendor map, so not sure if thats allowed?
SQ
Any suggestions or comments?
I can post a log, but it is a vendor map, so not sure if thats allowed?
SQ
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Car seemed to be slower this spring/summer. Miss at idle was never really present until a month or so ago. These logs from this years have alot of knock (10 counts or better).
I have had a CEL for the past year due to no cat. So not sure on anything else? Evoscan nevers shows anything when trying to read the CEL codes.
SQ
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EDIT :: Smarter people than I have cleared this up and a misfire causes a lean spike, not a rich spike. So, ignore the "rich" rubbish I've posted here. Head down a few posts for a better explanation ...
I would think a misfire would show up rich instead of lean ... But, depending on how bad the misfire is it might not show up at all. If anything, look for a slight RPM dip or flat spot and rich mix. the problem would be the sample rate while logging ... if you only see around 4 samples/sec and that probably wouldn't catch a misfire at crusing RPM.
I would think a misfire would show up rich instead of lean ... But, depending on how bad the misfire is it might not show up at all. If anything, look for a slight RPM dip or flat spot and rich mix. the problem would be the sample rate while logging ... if you only see around 4 samples/sec and that probably wouldn't catch a misfire at crusing RPM.
Last edited by TouringBubble; Jul 9, 2007 at 12:46 PM. Reason: I was wrong =(
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I would think a misfire would show up rich instead of lean ... But, depending on how bad the misfire is it might not show up at all. If anything, look for a slight RPM dip or flat spot and rich mix. the problem would be the sample rate while logging ... if you only see around 4 samples/sec and that probably wouldn't catch a misfire at crusing RPM.