getting dark fuel on a 470 detroit,checked injectors,replaced fuel pump.anyone had this one?
oil in fuel?
Discussion in 'Trucks [ Eighteen Wheelers ]' started by javelinjeff, Sep 15, 2007.
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are the o-rings good on the injectors, how many miles on the engine?
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685k on the motor,shop did a diagnostic on injectors- checked out ok.fuel is not getting into oil,sign of bad o-rings or liners.claimed it was a bad check valve at the back of the head?? another shop did the fuel pump thinking oil was leaking through the seal.truck runs good-will bury the speedo no problem,just wondering has anyone had this exact same problem?
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update, either it was the seal on the fuel pump or the clogged check valve on the back of the head. 400 gallons later the fuel is no longer dark.
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