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Re: Lean code caused by exhaust valve being held open
Posted to Technical Theory Forum on 5/18/2004 11 Replies

Anything that causes a misfire will cause leftover O2 in the exhaust even if there is leftover fuel to go with it. Misfires (of any origin) usually cause the O2S to read lean. Login to read more.

11 Replies Received (View Replies)