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Engine Specific Info and Questions => IDI Engine => Topic started by: robz on September 19, 2008, 11:21:24 am

Title: leaky throttle shaft
Post by: robz on September 19, 2008, 11:21:24 am

hey,

I have a 1991 vw jetta diesel 1.6 non-turbo.  It is leaking at the throttle shaft.  I have spoken with a few specialists which gave me their advise.

I could have the top fixed in which 2 seals (1 push in seal/bushing) would be replced, or to rebuilt/replace the entire injection pump...

fixing the top is a lot cheaper, but does not guarantee that there are no leaks elsewhere...

anyone tackle either of these on their own...  I

please help me out,

thank you,

robz

Title: leaky throttle shaft
Post by: gigaz2 on September 19, 2008, 11:24:11 am

local bosch dealer can help you n getting the kit

Title: leaky throttle shaft
Post by: robz on September 20, 2008, 07:02:55 am

anyone?

robz

Title: leaky throttle shaft
Post by: blkboostedtruck on September 20, 2008, 05:04:36 pm

get a Gile's pump and feel new power with out a turbo! will be just as fast !
Duane

Title: leaky throttle shaft
Post by: commuter boy on September 21, 2008, 10:50:54 am

You can fix the easy to get to seals yourself, but you're right, the pump will start leaking somewhere else not so easy to get to yourself.

The big problem is if you don't catch the next leak and it ends up getting diesel on the timing belt you'll be tossing your engine when/if the belt breaks.

Keep an eye on the belt if you don't have the whole pump rebuilt.  If you don't absolutely know what you're doing, and can't afford to make a mistake putting the pump back together then I would recommend farming it out to someone who does.

Title: leaky throttle shaft
Post by: robz on September 21, 2008, 03:17:18 pm

hey - thanks for the info guys...

to fix the leak, to do the top, do I just install the front seal and this seal?

http://www.veg-injection-service.com/store/index.php?main_page=product_info&products_id=15

I heard that the bosch seal kits do not come with these 2 seals or the 2 that are needed.

thank you,

robz

Title: leaky throttle shaft
Post by: Luckypabst on September 21, 2008, 05:12:01 pm

Most likely the bushing insert is worn oblong and no seal will fix the leak. It's a straight-forward press out/press in job and the part runs about $25. Otherwise there's a typical O-ring on the throttle shaft and the molded seal that fits the shape of the pump cover - these 2 seals are included in the Bosch kit (both DGK 121 and 126, I believe), each kit can be had for $20 or less - shop around.

Getting the bushing will be the hard part, you need to know the ID, OD, length and dimensions of the step on the underside before calling your local friendly Bosch shop, then hope that they'll even sell you the individual parts. I had good luck with a shop in Fresno or somewhere in the "fertile valley" of California - I can probably dig up their info if you need.

It can get a little tricky to R&R the pump cover - how is your mechanical aptitude?

Chris