Hey all, New to vwvortex. I have a 1980 vw dasher diesel, with a motor from an 1981 dasher 1.6 Diesel N/A.
The car has 160,000 miles on it, and the motor has 188,000.
being that it had so many miles, and it was starting to develop some slight misses at certain rpm's, I figured that it needed new injectors.
After reading my Bentley garage manual, I determined that the injectors could be rebuilt, so i bought some injector nozzles on ebay, and changed them out.
the car started missing alot, so i did some more research, and figured out that they needed to be pop-tested, so i purchased 4 new injectors on ebay, figuring they would work fine.
the engine stopped missing at an idle, but it smoked like i have never seen before, and started missing when you drove it around.
Again, I thought that it might not be pop-tested properly, so I built my own pop tester out of a bottle jack and a glycerin filled gauge.
I was astounded to find that my new injectors were popping anywhere between 120-140bar, depending on the injector. I have been told that is too far apart, so i bought a shim kit, and tried to rebuild them. i got them all at 130 bar, and it still isnt working.
someone told me that my injection timing must be wrong, but i time the engine with all the proper tools (dial indicator and such), NOT BY EAR. my Timing is currently set to .83mm just like the Bentley manual says. It runs much better if I pull out the cold start cable, from what i understand this changes the injector timing hydraulically, not statically.
Here is my question,
Is it probably my fuel injectors? or could it be my fuel pump, KEEP IN MIND THE VEHICLE WAS RUNNING FINE BEFORE I TRIED TO CHANGE THE INJECTORS!!! (My injection pump is relatively new)
Where could i purchase fuel injectors? Does anybody have some used ones in good shape?
I have read before about aftermarket injectors (AAZ i believe).... do these fit on a 1.6D N/A? What is required to change/ what are the benefits?
There is a more detailed description of what has happened with my Dasher on this webpage
It has been 5months since this problem has developed, and I have forgotten everything that I have done since then.
THANKYOU IN ADVANCE FOR ALL YOUR HELP!