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1998 Chevrolet 3500 Pickup Question: Has anyone encountered a strange fuel leak with the 6.5 diesel?

 

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twalls, 6.5L V8 Diesel Turbo, Cross Plains, IN, May 15, 2012, 15:00
 Rookie

Fuel is leaking heavily from somewhere above the starter (onto the starter) and also drains steadily from weep hole in bottom of bell housing (both only when running). Injector lines are tight and dry at pump and block. Watched from top and bottom of truck. Mechanic ran a scope to the injector pump. Checked pump, connections, and "valley" that pump sits in. Cannot find source of leak. Any info would be greatly appreciated.

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    mastertech6371 May 15, 2012, 18:19
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     Master

    sounds like you need another set of eyes. it sounds like a return line from the injectors may be leaking. it is those real small hoses that connect them all together.

    Roy

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    twalls, May 21, 2012, 04:51
     Rookie

    Thanks. I'll have to see about doing that. My mechanic swears that he checked all injector lines as well as return lines individually (can't confirm that). I guess what makes it believable to me is that most of the fuel is coming from the bell housing weep hole. It seems that a leak from any fuel line should run down the outside of the motor. Do you know of a reason why the majority of the fuel would be going into the bell housing? Then I could point this out to him.
    Thanks again,
    Troy

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    mastertech6371, May 21, 2012, 04:54
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     Master

    the only way that can happen is if there is a leak at the pump and it fills up the valley and leaks out the back.
    he will have to pull the upper intake to find it.

    Roy

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    twalls, May 21, 2012, 05:00
     Rookie

    Thanks so much for your quick response. I will speak to him today.

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