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68C15 · 10-21-2009, 08:16 AM

have you ever ran E85? it attacks the "rubber" on the intake gaskets.
what are your long term and short term fuel trims at both idle and 2000 RPM for both banks? I suspect that bank 2 is getting close to setting a P0174. I would also look at the missfire data stream

10-21-2009, 08:16 AM	#4
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	Re: P0171 DTC - sys too lean (Bank 1) have you ever ran E85? it attacks the "rubber" on the intake gaskets. what are your long term and short term fuel trims at both idle and 2000 RPM for both banks? I suspect that bank 2 is getting close to setting a P0174. I would also look at the missfire data stream