Question about 1999 Ford F250 Regular Cab

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1999 ford f250 7.3 diesel, leaking fuel out of the drain tube from the fuel filter

Leaking fuel out of the drain line,
the yellow valve that you turn to drain fuel from the fuel filter, it leaks out of there when the truck is running

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  • Anonymous Oct 24, 2008

    leaking

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Replace the drain valve. They leak all the time.

Posted on Oct 16, 2008

The drain valve is attached to the fuel filter with 4 screws with the star head. You can use a correct size van allen wrench to unscrew these screws (which is hard to do with little space) and put your new drain valve in. The new drain valves have huge O rings that work better than the seemingly non existent washers that come from the factory. You will first need to take out your fuel filters and drain the filter body because when you take the water drain valve off, all the diesel will come out any way. This is a good time to take apart your whole fuel filter and clean it out good. An air compressor works great. Be careful with the plug in fuel heating element if you do take the plate off that it just under the filter (two allen screws). You can unplug it and clean the bottom of your filter housing so your water drain does not plug up with the stuff on the bottom of the filter housing.

Posted on Oct 30, 2008

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