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DEF Damaged HPFP

This is a cross section of a damaged 6.7L High Pressure Fuel Pump that had Diesel Exhaust Fluid run through the fuel system after it was accidentally poured into the fuel tank. The corrosive nature of DEF eventually led to this pump seizing during operation and splitting the case in the process. Notice the rust colored crystals and the scuffing.

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© Keith Browning

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Fuel System Failures

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