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Re: More terrible ASE questions
Posted to Industry Issues Forum on 4/9/2020 2 Replies

In order for the fuel pressure to be the cause, the O2 sensor would also have to be faulty/biased lean. As I stated in my original reply, I would also expect high HC with a fouled plug but maybe it just isn't part of this story or, if you're testing post cat i... Login to read more.

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