Thread: Knock at idle?
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Old 09-24-2009, 09:54 AM   #7
wrxsti.l
Scooby Specialist
 
Member#: 156973
Join Date: Aug 2007
Chapter/Region: International
Location: Adelaide, Australia
Vehicle:
2002 ADM WRX STi
STi Black/Blue

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What do you mean by rich AFR at idle?

After you initially start the car it will run a little rich until the enrichment comp is over, but then it should go to normal CL target (around 14.6 or whatever).

So once you start the car, if it doesn't start targeting your CL AFR target in around 10seconds (assuming your engine is already warmed up), then something else is wrong.

Do you still have stock injectors and airfilter box/MAF?

Leslie
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