Fuel leak under pump - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 09-10-2019, 08:31 PM Thread Starter
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Fuel leak under pump

I sopped up all the fuel in my valley to get a better idea where exactly it is coming from. Looks like it is coming from under the pump. I seem to remember from my searching that this means the fuel pump needs replacing, but I wanted to confirm that before I start throwing parts at her. I ran my hand under the hoses and the came back dry.

you can see the fuel shining in the picture.

Thanks in advance for any help/recommendations.
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post #2 of 9 Old 09-11-2019, 09:50 AM
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Time for efuel. You won't regret it.
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post #3 of 9 Old 09-11-2019, 10:37 AM
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There is a weep hole at the pump base and that is probably your leak. If your are going in there to replace the pump, get new hoses, banjo bolt washers, and might as well reseal the fuel filter bowl too. I would recommend (if not going to efuel) getting a new OEM pump (Riff Raff and Diesel O-Rings both sell it. Cheers!
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post #4 of 9 Old 09-12-2019, 05:03 AM
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I'd just like to add that if it's been leaking for a while the pump will more than likely break from the oring swelling up, if it does be careful not to drop the plunger and the broken piece down inside the motor. And I second what Patrick said about a new pump not a reman. I have to put 2 pumps on one right after the other because of them leaking and they were carted brand fuel pumps but my guess is that they had been on the shelf forever.
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post #5 of 9 Old 09-12-2019, 09:13 PM
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Although you do probably need a new pump, I would first put a 1 1/4" wrench on the banjo bolt and make sure it is tight (40 ft/lbs.) before I changed the pump. Just my 2 cents...
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post #6 of 9 Old 09-13-2019, 02:12 PM Thread Starter
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Quote:
Originally Posted by NotThatGuy View Post
Although you do probably need a new pump, I would first put a 1 1/4" wrench on the banjo bolt and make sure it is tight (40 ft/lbs.) before I changed the pump. Just my 2 cents...


I will definitely give that a try


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post #7 of 9 Old 09-14-2019, 02:36 PM Thread Starter
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It turned a little bit. I sopped up all the fuel and we will see if that did the trick.
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post #8 of 9 Old 10-03-2019, 05:02 AM
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I had similar puddles of fuel in the valley on my 96. So I got all the stuff to swap pumps and re-seal the fuel bowl. The hoses on mine were only a couple of years old, since I had to replace the metal fuel lines from the frame up to the regulator. Anyways, in my case the short fuel hoses were what were leaking. I regulated down my air compressor to 40psi and plugged one side of the hose, and you could see bubbles leaching through the OD of the hoses. I'm suspecting that ULSD might be eating away at some of these hoses. Instead of buying the overpriced Ford hoses, I just used some good Gates bulk diesel hose and cut to length.
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post #9 of 9 Old 10-03-2019, 06:29 AM
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Where did you find the new metal fuel lines? I had one with a hole in it from rubbing on the cylinder head behind the ac compressor so I just replaced it with efi rated rubber fuel line.
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