[Vwdiesel] Jetta just stopped running

[fudny at aol.com]

Hello, my 85 N/A diesel Jetta stalled suddenly, fortunately I was just 
1/4 mile from home. But I can't figure out why my injection pump is not 
drawing fuel. Quick run down on what I did, I tested the fuel shut off 
valve, I hooked the fuel line directly to a container of diesel, and I 
tried to suck fuel thru the pump (fuel return) with my hand vacuum 
pump. The vacuum pump pulled some fuel thru but as soon as I disconnect 
it to empty the reservoir it sucks air in if I blow with my mouth in 
the line from my filter I can hear it bubble in the tank.

  I'm scratching my head, has my pump suddenly gone bad? I was leaking 
thru the throttle shaft area for quite sometime now but only when it is 
cold, car warms up leak stops.

  Any suggestions of what else to test? I do have a spare pump I removed 
 from a Rabbit about 12 years ago and is somewhere in my garage attic. 
Would this fit on my 1.6 as it came off an 1.5? I don't know its 
current condition.

 TIA - Terry

85 Jetta 2Dr. Diesel
85 Griumman Kubvan (84 VW diesel pick up drivetrain and suspension.)