Question about 1986 Ford F 350

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I have a stanadyne injection pump on a 1986 ford 6.9 liter diesel ,the pump was bought as rebuilt but is way overfueling the engine,a friend and former diesel tech told me the bypass ''button'' may be might i unstick the button or check for any other possible ''common'' issues that may cause a ''good'' pump to overfuel??

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I would take it to a good injection pump shop. Injection pumps are pretty finiky to work on. They require some special test equipment also. Just my 2 cents. Good luck.

Posted on Sep 26, 2009


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