A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Running too Lean

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Old 05-30-2006, 07:57 AM
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Default Running too Lean

Can someone tell me how to adjust my engine so it doesnt run too lean... the odb scanner said it was too lean... 1997 A4 2.8. cheers
Old 05-30-2006, 08:01 AM
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Default Like i said in the post below... please dont back to back post someone will help you...

Check your injectors:

reseat them in the intake manifold.
maybe run some fuel injector cleaner
check fuel filter
check fuel pressure regulator
check fuel pump.

--dillon
Old 05-30-2006, 09:02 AM
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WJM
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you have a leak, or pinched a line, or did something else... you need to find what is broken
Old 05-31-2006, 03:34 AM
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Default Re: Running too Lean

Please post entire code(s). If you're seeing Long Term Fuel Trim - system too lean, I'd look for a) vacuum leak, and then b) test out your MAF.

The MAFs are notorious for this kind of failure.
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