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BMW 3-Series (E90 E92) Forum
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Code P0171 and P0172
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| Today, 07:09 PM | #1 |
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Code P0171 and P0172
It’s running rich and lean at the same I guess don’t know what to do or where to start, new pcv valve and it had a cracked vacuum canister that I replaced but still pops and help or suggest would be helpful.
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