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Engine Specific Info and Questions => IDI Engine => Topic started by: bajacalal on July 13, 2009, 12:49:22 pm

Title: Getting a few things straight.
Post by: bajacalal on July 13, 2009, 12:49:22 pm

These are newbie questions, I know, I'm new to VW diesels. But, I'm not new to wrenchin'. I've been under the hood of a car for the better part of my life.

There are 2 hose barbs on my engine. They are not connected to anything, just vented to atmosphere. I never liked the look of this. One is a hose barb on my injection pump. My manual says that there should be a vent to atmosphere on my boost compensator thing on the IP. It's a 1985 Jetta TD engine in my Golf. Fine, it's vented to atmosphere. This worries me a bit, a hose barb exposed to the elements, allowing dust where there must be a delicate rubber diaphragm. Keep in mind I live on this little ranch and this VW is in a dusty environment a lot of the time and is driven on rough dirt roads.

The second barb is on the wastegate, I think. I can't find anything anywhere about how to correctly connect this, not here, not in my Bentley. I've read the EcoDiesel has a vacuum solenoid to control the turbo but I don't have that engine.

Should I cap these, leave them vented or connect them to something else like the intake manifold (for the wastegate)?

If these stay vented to atmosphere I'm going to rig up a breather filter to keep the dust out while maintaining ambient pressure.

Pics attached:

(http://lh4.ggpht.com/_yiCa6t_wTjA/SlfIziUWYgI/AAAAAAAAAB8/Gqx1bRqEIrE/s400/IMG_0842.jpg)
(http://lh6.ggpht.com/_yiCa6t_wTjA/SlfIzsx49LI/AAAAAAAAACA/nWO4LzvOZi0/s400/IMG_0849.jpg)

Title: Re: Getting a few things straight.
Post by: burn_your_money on July 13, 2009, 06:02:25 pm

The one on the pump should be left open to atmosphere. Usually there is a mesh filter under the boot but it looks like your pump has a fitting on it instead?

I'd have to have a look at one of my T3 turbos to see what's going on there

Title: Re: Getting a few things straight.
Post by: bajacalal on July 15, 2009, 07:24:11 am

Quote from: burn_your_money on July 13, 2009, 06:02:25 pm

The one on the pump should be left open to atmosphere. Usually there is a mesh filter under the boot but it looks like your pump has a fitting on it instead.

Thanks. The pump has been rebuilt, maybe that's how it got that configuration.