1. Is it possible at all that the pin was just in a position that allowed a tiny bit of fuel through and its ok during normal operation? If not than I guess its obvious that pin isn't sealing, but everything was changed with bosch parts, I was there, so that definately sucks. And we are lucky on our pump, there are just screws so I could pull the top off again and reseal.
2. I have been working alone with the car and got an extra set of hands to help me today and I think I found a major problem and would love it if somebody could confirm these symptoms before I try and get it back on the road tomorrow
![Smiley :)](http://vwdiesel.net/forum/Smileys/classic/smiley.gif)
The fuel appeared to stay primed but at its worst I couldn't seem to detect the fuel pumping. I would let the car rest a couple hours between each session to get started and it would start up then slowly get worse until 5 minutes later the car would die on not hot restart right away. EAch time I had been feeding from gravity to get things going again.
I have been so concerned with the idle and not revving the hell out of it, just stabbing to see if it would return.
My brother just helped me and something interesting happened. We saw the same thing happen with a jug of fuel on the inlet with a filter. Started up cold, idle started to lope, revs high with white smoke and within 5 minutes car would die when stabbing the throttle and letting off. Car didn't want to hotstart so I would pop the hose and gravity feed again.
Well I stayed in the engine bay and once he got it started each time he wanted to rev the hell out of it to see if it cleared out. He kept it barely running high up but then as a few minutes went by the return line had foam/bubbles fighting each other on the car and the soft clear line started to fill up like a baloon and touched the firewall!
I yelled to stop and by the time he did the inlet of the pump with the filter on it popped free and shot diesel across the driveway!
I was not seeing this extreme pressure/bubbles when I messing with it alone but everytime it died and wouldn't hot restart I could swear I couldn't note a change in the fuel movement.
Gas tank has been open when screwing around. Over 6 months ago I treated the tank and put on another fuel filter and cleaned all tank connections and the sender/pickup screen(just a hint of sludge). I also ran new lines back to the tank with soft unions in engine bay and near tank to see what was going on.
Does this mean I have a bad return line restriction? When initially starting up cold it seems like the fuel shifted and pickup through the stock setup lines and filter seemed fine.
If so I have no idea why this is showing itself after my very simple pump adjustment but I guess crazier things have happened?
Thanks for any info!