[Vwdiesel] Engine rebuild, now sucking diesel

[Martin K]

After starting the engine  for the first time, I had let it run for an
hour and then drove it for about 10 km.
Then back home I had observed air gushing  out the outline in spurts
every 4 or so cycles.

Today, at a glance, it appeared to be the same or so I assumed . I put 2
litres of ATF into the tank and drove it for about 10km and then let it
run for 30mins.
I checked it a few hours later and it appears okay. Maybe it did take
time to purge the air OR the fuel in the pump swelled up the shaft seal
OR the atf did the trick.
Sorry I can't be more definite.
Thanks for all the advice.
On cold start (10C) the  engine starts up a split second after ignition
and the oil pressure light disappears a second after that. Can't  be
true, how long can it last?
Martin
> I suspect that it will disappear soon.  It takes a bit of running to
> purge all of the air from the pump.  If it doesn't stop by itself, I
> would check the sealing washer at the pump fuel inlet.
> Mike Snow

> If no air is entering the suck line, it  is probably a small amount of
> leakage at the shaft seal.
> A worn shaft seal will allow the vane pump tosuck a little air in while
> running, and, usually, let a little fuel run out at the shaft end when at rest.
> Sandy