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bad fuel leak on a first gen.. A little help with a diagnosis Pump??

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Old 12-08-2017, 03:29 PM   #1
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bad fuel leak on a first gen.. A little help with a diagnosis

I need a little help diagnosing this fuel leak. The rig is a 91 non intercooler 4x4 w250
It is in the area in the photo below. It is at the area where the little red arrow is pointing..I took the photo from underneath the rig. it is up past the power steering pump. It is diesel leaking for sure NOT steering fluid
It is only dripping under pressure, truck running
stock pump looks like
Can anyone tell me what that is leaking and whats involved in fixing it?
thanks
Attached Thumbnails
bad fuel leak on a first gen.. A little help with a diagnosis   Pump??-fuel.png   bad fuel leak on a first gen.. A little help with a diagnosis   Pump??-fuel-2.png   bad fuel leak on a first gen.. A little help with a diagnosis   Pump??-pump.png   bad fuel leak on a first gen.. A little help with a diagnosis   Pump??-pump1.jpeg  

Last edited by Morsel; 12-08-2017 at 03:30 PM. Reason: wrong word
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Old 12-08-2017, 03:43 PM   #2
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I would think that it is coming from the IP and dripping down to that point. There are some pump masters here that may have an idea from where...Mark
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Old 12-08-2017, 03:54 PM   #3
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It is dripping a stead drip from the very bottom of that where the red arrow is in the second picture. I got in there with a light and I couldn't see and fuel coming from the lines coming in from the back
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Old 12-08-2017, 05:45 PM   #4
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It is dripping a stead drip from the very bottom of that where the red arrow is in the second picture. I got in there with a light and I couldn't see and fuel coming from the lines coming in from the back
Sorry, there was only the one photo when I posted. Someone that knows the VE should chime in soon...Mark
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Old 12-08-2017, 05:59 PM   #5
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been doing a bit a research this afternoon. Looks like I am going to have to pull the pump. I am wondering what the cheapest best options are? I have had experience with rebuilding carbs of all kinds and I am familiar with that but not diesel injection pumps. If anyone can lend me some advice on how to proceed that would be great. I would really rather not replace the pump at this point if I can avoid it. IF i have to where is a good place to get one that is good but cheap?
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Old 12-08-2017, 10:52 PM   #6
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anyone? Any pump experts out there?
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Old 12-09-2017, 12:33 AM   #7
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All kinds off good injection pump shops out there. Best I can tell you is not to price shop. If you want cheap that is exactly what you will get a half baked repair job with a for sure failure just around the curve.

Your pump looks really clean did you by chance just pressure wash it after you had the engine running?
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Old 12-09-2017, 03:32 AM   #8
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All kinds off good injection pump shops out there. Best I can tell you is not to price shop. If you want cheap that is exactly what you will get a half baked repair job with a for sure failure just around the curve.

Your pump looks really clean did you by chance just pressure wash it after you had the engine running?
nope. I cleaned it with a small amount of degreaser and water after I spotted the leak to see where the leak was coming from.
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Old 12-09-2017, 03:07 PM   #9
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I believe there are reseal threads in the sticky. I had mine done at a diesel shop for $450 IIRC simply because I didn't have the time to do it myself. The truck was my only legal vehicle at the time so time was crucial.
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Old 12-09-2017, 03:41 PM   #10
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If you have the space, time, and basic knowledge you can rebuild your pump with a simple reseal kit, and be done, as the rubber o rings tend to fail over a 25 year stint

Think I paid about $900 to have a diesel shop do mine, as I didn't have anything other than basic knowledge available at the time.

TC (ThrashingCows) has had his out and resealed a couple of times, and developed a special socket for one of the 3 sided nuts on the pump. Jim Lane as well. Its not difficult once you get one done under your belt, so they say. You'll need the Bosch reseal kit to do the job

Bosch DGK-121

Runs about $20
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Old 12-09-2017, 07:48 PM   #11
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Hey Morsel:

When you pull the pump for your reseal, be sure you mark the mounting flange next to the mark on the timing case. This way you can set the timing back to where is was when you took the pump out.

Edwin
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Old 12-10-2017, 12:04 AM   #12
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Hey Morsel:

When you pull the pump for your reseal, be sure you mark the mounting flange next to the mark on the timing case. This way you can set the timing back to where is was when you took the pump out.

Edwin
will do. Thanks Edwin!

Still trying to to find a genuine Bosch seal kit or a comparable quality kit or just the o ring. Hard to find apparently
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Old 12-10-2017, 12:35 AM   #13
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will do. Thanks Edwin!

Still trying to to find a genuine Bosch seal kit or a comparable quality kit or just the o ring. Hard to find apparently
I googled DGK-121 bosch and found this at the top: AFC Banjo Bolt

Google is your friend but it steals your soul.
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Old 12-10-2017, 12:38 AM   #14
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I don't know why it says AFC Banjo Bolt.

Here's a cheaper one: https://puredieselpower.com/dodge-pr...-seal-kit.html
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Old 12-10-2017, 08:59 AM   #15
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That gasket says 91.5 through 93. Will that set work on a 91?
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