Leaking Injector Pump...

[Bluebird]

My injector pump has a small leak on the top front by the gear case. I can't tell where it's coming from #@$%!. I wrapped a piece of chamois around the metal line on top of the pump which is absorbing the leak right now :-laf. How long do you think I can drive this way before the goat stops rolling? I have not done any work to the pump. I need to make some 2-hour trips in the next few weeks. I know that's not much detail, I appreciate any help.



Thanksgiving week Blessings to all, Patrick.

 

[Greenleaf]

sweet!! You'll get to pull that pump and learn all sorts of new and exciting things. It would be the O rings at the regulating (internal case pressure valve or at the governor shaft O ring behind that nut. If one leaks, others will follow.



Time for a seal-job. If the engine operates just fine performance wise, then seals are all that would be needed, other than the very common throttle shaft and bushing. The break-over spring should be replaced too and the (high pressure head) plunger return springs. Springs only last so long and break long before the pump will "wear out". So, replace them if you havn't done so. That is to say, unless you ran several gallons of diesel fuel mixed with gasoline throught that pump.



Don't fall sucker to "your pump is worn-out and needs replaced" unless you literally have internal pump issues manifested in drivability problems.



If you like to wrench on that thing i. e nothing better to do w/your time, then by all means, pull the pump (if required) and replace only the offending seal/O ring. (One at a time) as they begin to leak/weep fuel.

 

[Greenleaf]

... ... Oh, Thanksgiving Blessings to you as well, my friend!

 

[HHhuntitall]

Pump reseal kit - Bosch DGK 121 They were on nationwide backorder last year. I got one from a friend with most of the gaskets and o-rings in it. If you go through a search in the 1st gen forums, you'll find quite a few threads on it, including my own when the governor shaft was leaking. I'd never seen that before, and Greenleaf and cerebrusiam gave me the insight to regasket the whole thing. Good idea.



GASKET KIT, REBUILD KIT Dodge Cummins VE Injection Pump 5. 9 Diesel | eBay



Mine would be hard to start as it was losing partial prime, and idled low at first startup. I tighten the set nut in front on the governor shaft, but it kept leaking. Careful, as you can crack the aluminum houseing I as told. Make sure you measure where the shaft is turned in: count the threads out so you can realign it when you re-install it. It has to come out to get to the o-ring seals.



Had this leak a while?!? https://www.turbodieselregister.com...am-forum-1989-1993/125162-ve-pump-leak-2.html :-laf

 

[ENafziger]

The break-over spring should be replaced too and the (high pressure head) plunger return springs. Springs only last so long and break long before the pump will "wear out". So, replace them if you havn't done so.

And where does a person get these springs from? It doesn't look like they're included in the Bosch rebuild kit?

--Eric

 

[Greenleaf]

No. The so called "rebuild kit" is the seal kit that is employed during a pump tear-down and reassembly. Just O rings, aluminum washers and a shaft lip seal.



The hard parts are replaced as needed. generally, if you take a known good operating pump down to replace all them O rings and the lip seal, you will have access to some hard parts that give known problems, like the broken return spring(s) for example.



Any Bosch dealer/pump shop have the breakdown of items like the throttle shaft and it's bushing etc. etc. I can give you the item no. if you'd have to have it, but the vendor will have that. Call w/the pump no. found on the side of said pump.



I don't know what the current status is for the gasket seal kit. I haven't called for any lately... ... ... ... ..... I guess I could.

 

[Bluebird]

Hunt for IP parts!~

Thanks a million everyone. I knew y'all take care of me. All engine performance is fine, at this time. I'll update pump progress as it comes together.



TDR, Thanksgiving. Brrrrrp, I'm stuffed:-laf



Patrick

 

[cerberusiam]

And where does a person get these springs from? It doesn't look like they're included in the Bosch rebuild kit?



--Eric

They are not, you have to buy them seprately like the case PR valve. The better springs can scavenged from other pumps if you get the right one but its a lot easier to just get them.



There is also the cam plate with hardened rollers that is a wear point when you get into upgrades and of course the distribution head also.



Anybody want to buy a genuine Bosch distibution head for a VE? They are only $950 plus shipping from Germany. :-laf

 

[RedRamAndy]

HHhuntital, that is a nice seal kit there on E-bay. I know when I ordered mine from my local Cummins distributor a few years ago, somebody musta swiped the schematic out of the box. #@$%! One member here was nice enough to supply me with a digital copy of the VE book which helped greatly. Another big help were the archives. I found a link to an article where a guy documented the rebuild of his VW pump which had similar internals. Do some searching here Bluebird. It's a great wealth of info.

 

[Bluebird]

I ordered the kit. I know someone with an OTR Diesel service shop in my area. I plan to speak with him to see what he can do. I'm not sure I want to tackle this job myself. I'm a pretty good jeg-leg mechanic. The IP seems challenging for me. I hate to have my truck done if I don't have to spend too much $$$

Thank you all! Patrick.
TDR the best resource. I keep telling everyone I meet with a CTD.

 

[HHhuntitall]

I totally understand, but you can't learn if you don't try..... now, for some, it might be cost prohibitive... . but the pump is much simplier than I ever thought. Those VW diagrams, and the website with the step by step instructions really put it into perspective, to me. I haven't tore one completely apart yet, but I'm not scared to with those schematics and pictures. I just did a rough seal job to get it back on the road for a customer, and apparently I must have done it right, as I haven't seen or heard from them in a long time.

 

[Bluebird]

IP built by Diesel Injection Service...

Took 'er in Monday morning, had the truck back by Wednesday afternoon. Costs a lot, many parts replaced, got the old ones back. They said the pump was so bad they were surprised it still ran. Runs like a champ today. I still need to put a lot more miles on. I will post again later on the price. Yes it was expensive



Patrick.

 

[RedRamAndy]

I'm glad it runs good Patrick. At least that takes some of the $ting out of it. I don't mind paying if it gets a great result.

The pump on my truck looked great when I resealed it. I enjoyed doing it, but it was pretty involved. One thing that is a bit odd though is that the truck seems to have just a wee bit of a 'lope', like a V8. It's not much. But, most other VE pumped trucks I've seen idle like that when set a bit low like my stickshift is. I was amazed on just how few cylinders that bad boy will run on when I was bleeding the injectors! It fired up on bleeding the third one! It made it really fun trying to bleed 4 and 5. Had to chase the jumping thing with the wrench to get to those injectors!:-laf

 

[1stgen4evr]

pump leak

I only have one truck that has not started to leak. Have the kit and to sorry to do the work, but I will.



I hate the smell of fuel.



James

 

[Bluebird]

IP rebuild final cost...

Pump restored by Diesel Injection Service, San Bernardino. Final cost $1440. 00. Truck runs well seems like fuel mileage has improved first tank full, I have not calculated yet. The idle is a little high, I'll take it back in to have them lower it to 850 rpm. BTW is that the correct idle rpms?



Thanks everyone for your encouragement and help. No I did not dig-in myself to repair the pump. I need my truck weekly for hauling.



Patrick