lean code on bank 1
04-01-2008, 12:10 PM
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lean code on bank 1 I replaced the intake gasket when i installed the ls1. i sprayed around the intake to see if i was getting a leak, nothing happened. Maybe the inner gasket slipped or something. I am gonna pull the header on that side to make sure it is seated correctly. o2 sensor shows active on that side all though it is the original {214k miles} . I am kinda lost at this point to know what to check for. I guess I will pull the intake to see if maybe that gasket slipped like I said but other than that what else should I check? Vac ports or anything else I should be looking for? thanks
04-01-2008, 01:18 PM
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I replaced the intake gasket when i installed the ls1. i sprayed around the intake to see if i was getting a leak, nothing happened. Maybe the inner gasket slipped or something. I am gonna pull the header on that side to make sure it is seated correctly. o2 sensor shows active on that side all though it is the original {214k miles} . I am kinda lost at this point to know what to check for. I guess I will pull the intake to see if maybe that gasket slipped like I said but other than that what else should I check? Vac ports or anything else I should be looking for? thanks
04-03-2008, 10:59 AM
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ok changed bank 1 o2 sensor and it helped a ton, But bank 1 is still running about 4% higher than bank 2. i cleaned the maf as well. Injectors are new {9k}miles on them