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Re: M.F.7 Making Oil
Posted to HD/Fleet Forum on 5/15/2019 3 Replies

It’s usually either the pump, the injector lines, or the pressure sensor. More often than not the pump. Running at idle may not reveal. The pump harness has also been known to cause fuel dilution. Navistar has a pretty detailed IK article dealing with fuel dil... Login to read more.

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