Model Specific Questions and Info > MK2 Golf/Jetta and Audi 5k

1992 1.6TD ECOdiesel

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KCroz1104:
was searching through a few forums and I read that a way to get a bit more power from the ole 1.6 ECO for basically free is to mess with the fuel screw on the injection pump, I did that, the screw itself was extremely rusty, and extremely weak apparently, so I tightened the locknut and must have tightened it a bit TOO tight because it ended up snapping in half inside the pump, everything behind the locknut is inside the IP, i have the locknut and whats left of the screw itself atm. What can I do? New injection pump? Still starts and runs but at low revs, low enough to the point that I have to pull the cold start lever out to keep it running or it will stall. Is it safe to run the car with the snapped in half fuel screw? Not sure what steps to take from here

ORCoaster:
You could turn up the idle a bit using the adjustment screw for that.  That will help you, the cold start lever is not normally used as a fast idle adjustment. 

To get a replacement fuel screw I can think of a couple of possibilities.  Giles a world-famous pump rebuilder may have a spare he could sell ya.  Otherwise, you may be hunting on Craigslist for a core body just to extract the screw and locknut for your IP. 

Getting the old fuel screw out is going to be tricky.  I don't think I would risk a drill and easy out for that.  Too much can go wrong with that and then you are looking at Craigslist for a new IP.  Maybe some epoxy-type glue on the end of a piece of a rod might work.  Getting epoxy on the threads may be counterproductive but if you make it really thick and have the pump tipped up on its nose you may get it on there without a lot getting on the threads. 

Good luck with it. 

fatmobile:
 You might have to pull the top to get the broken piece out ya brute.
 Might as well get a DGK-126 seal set before you open it up.
Not hard to find a new max fuel screw.
I have a spare.

KCroz1104:

--- Quote from: fatmobile on July 12, 2021, 11:59:23 pm --- You might have to pull the top to get the broken piece out ya brute.
 Might as well get a DGK-126 seal set before you open it up.
Not hard to find a new max fuel screw.
I have a spare.

--- End quote ---
I cant find a fuel screw to save my life, Im only 16 so im new with all this haha. Im going to be driving it to a shop next week on the 20th for a new clutch, only 10 or so miles. do you think that would be a problem since the fuel screw is snapped off inside? I took it out for a drive yesterday night after adjusting the revs to compensate for the loss of power after over-adjustment of the fuel screw and it ran like normal, just with basically no power, took forever to switch gears even in 2nd. Also any ideas where to find a new fuel screw? I've been looking in forums, euro car part sites, everywhere. Can't find one.

ORCoaster:
buy the one fatmobile has as a spare.  The fastest way that I know of.  I can't remember if I ever saw a place that sells spare parts for the Bosch IP. 

Does anyone have a link for that?  Maybe some of these rebuilders know of one.

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