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Home >> Jeep >> 1989 >> Comanche Eliminator, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> 4.0L MPFI CEC Testing >> System Testing >> Notes

System Testing: Notes

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WARNING: Before testing fuel system, ALWAYS relieve residual fuel pressure in fuel delivery system before opening system. To prevent chance of personal injury, cover fittings with shop towel while connecting or disconnecting test equipment.