Leaking TDI injector pump

BillQQ · Sep 20th, 2011, 09:29

Morning all

Having suffered a cambelt failure on my 855 TDI, I have replaced it with another almost identical vehicle, this time an 855 TDI auto. The new car has been exceptionally well looked after and has recently had all belts changed, but I have just discovered a fault which was not evident when I bought it.

Having removed the engine cover, I found a leak in the injector pump. From the limited inspection I have been able to make so far, it appears to be leaking around the block from which the 5 injector rails attach. It is worst when cold (it was still warm from the previous owner's drive home when I bought it) but there is still a drip when the engine has warmed up.

This leads me to a few questions:

1 - Can anyone recommend any quick fixes - If I can get back from work before it's dark then I'll try to get in and tighten up any screws to see if anything has worked loose.
2 - Can injector pumps be repaired -Does it sound like a quick gasket replacement problem or will it spring apart if i even attempted to open it up??
3 - If it means changing the pump, is that a big job?? I do still have the pump from my old car, though that is getting pretty old too!

Bill

outnumbered · Sep 20th, 2011, 11:06

morning Bill.
have not done one myself hope these diagrams may be of some help.
mike

GermoEST · Oct 22nd, 2021, 11:11

Hello.
I'm a new member but i own 1999 Volvo S80 with 2.5 TDI and i have a leaky pump. Leak is coming from the circeled part. What is behind this? Is it safe to unscrew those bolts or is something poping out there? Is there a seal or something to replace?

i'm unable to see the drawing posted here.

brickman · Nov 8th, 2021, 10:01

Quote:

Originally Posted by GermoEST

Hello.
I'm a new member but i own 1999 Volvo S80 with 2.5 TDI and i have a leaky pump. Leak is coming from the circeled part. What is behind this? Is it safe to unscrew those bolts or is something poping out there? Is there a seal or something to replace?

i'm unable to see the drawing posted here.

Speak to United diesel or darkside developments, only two left who really know their way around these pumps. United will prob tell you over phone what's possible diy, whereas darkside will just ask you to send it in
Some "bosch service centres" can do these, but they do them so rarely these days that you never know if they are gonna do it right till it goes wrong on you a few weeks later lol.

rudi dudi · Nov 8th, 2021, 21:51

City Electro Diesel best in the business.

J liddy · Nov 9th, 2021, 06:24

Talk to .DIESLECK based in Bridgenorth and Diesel Bob based in Preston both company's are old school and come highy recommended

Sep 20th, 2011, 09:29	#1
BillQQ Junior Member Last Online: Mar 13th, 2023 01:09 Join Date: Jan 2008 Location: Guildford	Leaking TDI injector pump Morning all Having suffered a cambelt failure on my 855 TDI, I have replaced it with another almost identical vehicle, this time an 855 TDI auto. The new car has been exceptionally well looked after and has recently had all belts changed, but I have just discovered a fault which was not evident when I bought it. Having removed the engine cover, I found a leak in the injector pump. From the limited inspection I have been able to make so far, it appears to be leaking around the block from which the 5 injector rails attach. It is worst when cold (it was still warm from the previous owner's drive home when I bought it) but there is still a drip when the engine has warmed up. This leads me to a few questions: 1 - Can anyone recommend any quick fixes - If I can get back from work before it's dark then I'll try to get in and tighten up any screws to see if anything has worked loose. 2 - Can injector pumps be repaired -Does it sound like a quick gasket replacement problem or will it spring apart if i even attempted to open it up?? 3 - If it means changing the pump, is that a big job?? I do still have the pump from my old car, though that is getting pretty old too! Bill __________________ '00 v70 TDI with no mods or veg '97 855 TDI manual with twin-tank veg oil '96 855 TDI auto with TT veg oil - Terminal loss of oil pressure (July 2013) @ 225,000 miles '96 855 TDI with TT veg oil and 276,000 miles. - Failed cambelt (15/9/2011)

Nov 8th, 2021, 21:51	#5
rudi dudi DPF free.FCUK Greta he he Last Online: Mar 28th, 2024 13:38 Join Date: Jun 2012 Location: Bristol	City Electro Diesel best in the business.

Nov 9th, 2021, 06:24	#6
J liddy Senior Member Last Online: Yesterday 21:12 Join Date: Jul 2019 Location: Stoke on trent	Talk to .DIESLECK based in Bridgenorth and Diesel Bob based in Preston both company's are old school and come highy recommended

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