Pump only runs at WOT?

thegimpster · Post by **thegimpster** » Mon Nov 03, 2008 4:42 pm

I bought a jetta a while back and my friend finally got it running, but when you start it it is only at wide open throttle. He said that some spring in it or something crapped out on me. Is there something i can do other than rebuild it or replace it to fix it?

Post by **Fatmobile** » Mon Nov 03, 2008 9:33 pm

Pull the top off the pump and free up the flyweights.
Might as well get a seal set and change a few seals while you are at it.

thegimpster · Post by **thegimpster** » Fri Nov 07, 2008 6:12 am

i bought another one off ebay for $94 so i am going to try that.

82vdub · Post by **82vdub** » Fri Nov 07, 2008 10:03 am

FWIW, replace the exterior seals in the new IP before you put it on the car. If the seals weren't replaced, with the new ULSD diesel, it's going to leak eventually.

tawney · Post by **tawney** » Fri Nov 07, 2008 6:56 pm

Take Fatmobile's advice; it's a lot easier than replacing the pump, and unless the ebay pump has been properly worked on, you don't really know that what you're installing is better. Free-up the flyweights first; if that doesn't work, then install the ebay pump.

thegimpster · Post by **thegimpster** » Wed Nov 12, 2008 5:07 am

i think i am going to send the ebay pump out to be resealed. i found a place that will do it fairly cheaply and it might be easier to do it now rather than later. i will try to free the flyweights up before i take it off to put the other one on. How hard is it to get the top of the pump off to check it?

surfcam · Post by **surfcam** » Wed Nov 12, 2008 12:46 pm

Take a picture of the springs on the throttle before you dive in. Then get some mechanics wire. Make some looses so you can hold part of the throttle in position while you take the springs off. Other wise it will go off like mouse trap. Thats what mine did. Lucky I had another pump to reproduce the set up. The top just lifts off with one little shaft that has to be detached. This was a Fatmobile trick I learned after set the trap off.

thegimpster · Post by **thegimpster** » Tue Nov 18, 2008 11:42 am

anyone have any pictures on how to do this. i get the general idea, but pics are always good.

82vdub · Post by **82vdub** » Tue Nov 18, 2008 11:48 am

Here's a link to pictures on how to assemble an IP. You can review the whole process and find what you're looking for. This is an excellent thread for information.

viewtopic.php?t=6694

Post by **Fatmobile** » Fri Nov 21, 2008 2:40 am

There's also a post I started called "injection pump springs" or something like that.

thegimpster · Post by **thegimpster** » Tue Dec 30, 2008 10:39 am

i just replaced the pump. i got it runnin good. I still have a few issues to work out but hopefully it will be on the road soon.

Post by **Fatmobile** » Wed Dec 31, 2008 2:43 am

Great to hear it's running.
Not the beginning of this project but not the end either

thegimpster · Post by **thegimpster** » Mon Jan 12, 2009 10:44 am

Here are some updated pics after i polished it and dyed the trim. The pics inside of the garage don't do it justice so i will try to get some in the sunlight.

Post by **Fatmobile** » Mon Jan 12, 2009 11:22 pm

Very nice ride.
Watch for oil out the dipstick tube. Easy cure if you find it,... might as well drill the restrictors out now

Internal block pressure can push your seals out.

thegimpster · Post by **thegimpster** » Tue Jan 13, 2009 7:15 am

Here are some of the before pics to see how well it spiffed up.