[Vwdiesel] More missing parts!

[Robert Downes]

so , i moved the pump back a tooth, and ended up off by almost as much, in
the other direction. the pin is now nowhere near going in, so i guess i had
it 'right' before. still, i left it this way because my injector tubes
seemed like they'd rather be shifted in this direction.
HERE<http://imgur.com/UFqA5.jpg> is
a picture of how much the pump moved. i'm at 1.01mm on the dial now.

what are the expected symptoms of super retarded timing like i apparently
had? remembering that the LDA was not connected and the
internal-pressure-operated timing advance likely not working? i'm excited to
see if there's a big improvement. a kindly lister is supplying me with a
mounting bracket and TBC hardware, and i think i'll wait until those get
here to try starting it.

thanks for your advice, everyone
-bob

On Sun, Jul 4, 2010 at 11:42 AM, <LBaird119 at aol.com> wrote:

> In a message dated 7/4/2010 4:21:20 AM Pacific Daylight Time,
> bobdownes at gmail.com writes:
>
>  As far as the timing, it's REALLY easy to end up one tooth retarded
> when  r&r-ing the timing belt, which it sounds like you probably did.
> When you put the lock pin in the pump gear, it has a little slop and
> due to internal spring pressure, it tends to rest at about 2/3 of a
> tooth retarded.  If you don't rotate it back then you'll put the
> belt on one tooth retarded.
>
>  The missing pump mount bracket tends to make the engine surge
> since the pump will wobble back and forth a bit.  I've seen a few
> do this.  If your timing WAS indeed at .61mm this whole time, then
> you may not notice any surging.  It shouldn't be thick enough to need
> a longer bolt and I doubt whomever did it went to the trouble to find a
> shorter one when they inexplicably took the mount off.
>
> > when the PO, a friend of mine, got the van(, the the IP leaked fuel
> > from the LDA breather. he needed to use the van, is not super into
> > research.
> > he opened the pump looking for a bad gasket, did not find the o-ring
> > around
> > the pin separating the pump body from the LDA, determined that there was
> > too-high pressure in there, found the 'weird' restricted out bolt hole,
> > opened this hole up a bit(luckily not too much), van still ran, no more
> > leak, he was happy.
>
>   Ok, so what's this weird restricted out bolt hole?  Do you mean
> the "out" banjo bolt from the pump to the return lines?
>
> from the looks of it, sometime before this, someone (he
> >
> > says it wasnt him) tried to adjust the internal pressure by banging the
> > lift
> > pump pressure regulator piston allllltheway down. this is the condition
> > the
> > pump was in until yesterday, including the aforementioned
> > trans-caddy-corner-continental-mega-trek i got me hands on a new o-ring,
> > out
> > bolt, reset the pressure regulator, and rigged a pretty nice internal
> > pressure guage attachment so once i get the thing running, i should be
> > able
> > to set it right lickety-split. just need to get a handle on my terror at
> > this dial reading. i'm making way too big a deal out of a measly .4mm,
> > aren't i?
> >
>
>   .4mm is a LOT.  If the internal pressure regulator pin is what was
> tapped down, it screws with the timing and he may have backed
> it off to compensate for it.  So if that's been messed with and the
> "out" banjo, you need to replace that banjo bolt, to regulate the
> pressure properly and you need that regulator set properly as
> well.  Both control the timing advance and it's never going to run
> RIGHT if they're wrong.  I just dealt with the regulator pin being in
> too far on one and "simply" had it taken care of during a rebuild.
> You're not likely to get it right by guess and by golly.  :-(  A rebuilder
> should be willing to set that and replace the banjo bolt reasonably.
> They might even have that bracket/mount too.
>     Loren
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