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nebraska | Spray the area clean and blow dry first to find leak. If from between engine block and front aluminum cover then the updated front cover gasket must be installed as stated above. If from the injection pump there are several possibilities. There is the large oring sealing the pump to the front cover. The small oring sealing the oil pressure port supplying the pump. And we have had several Bosch pumps that have had the four screws that retain the font plate to the pump housing right behind the drive gear come loose and let the gasket leak. The best thing to do is replace the gasket and retorque the screws, but we have also just cleaned the threads, added locktite, and retightened. That works fine to get you by. Could be the plugs in the bottom of the pump housing leaking also. | |
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Oil leak on 8.3 Cummins
