[T3] Vacuum Leak

[Adriel Rowley]

----------------------------------------
> From: jadney at vwtype3.org
> To: type3 at vwtype3.org
> Date: Wed, 12 Jan 2011 21:53:39 -0600
> Subject: Re: [T3] Vacuum Leak
>
> On 11 Jan 2011 at 17:35, Adriel Rowley wrote:
>
> > pulled the 1-2 runner, and found black spray pattern of black on the
> > gasket and the head.  Cleaned and checked all the surfaces, put the
> > runner back in, and did as Adney said to do: loosen it all, and get it
> > all sitting comfortably.  This is when I noticed the runner was rocking
> > on the head.
>
> Something wasn't flat. What was it? The head is pretty solid, the end
> of the runner is a steel casting, only the gasket has the potential
> of not being flat, unless there's some other object caught in there.
> Find the problem, then fix it.
>
Sorry I did not make it more clear.  The runner's flange was warped about 
half to three quarters of a millimeter when I set it on a true edge.  
Russ said it was due from over torquing, so used my new 1/4" torque wrench, 
and set it to 168 inch pounds so as not to do the same on the replacements.

As for fixing it, why bother when I have replacement parts?  Plus, still 
have no files, and really like to make it true on a head sitting on a bench.
;)

Which reminds me, can you please send the new charging system write-up and 
the T.P.S. write-up?  Like to double check things. ;)

> > Once it was all good, started it up, and the first minute or
> > two it ran a bit rich, and popped when the throttle snapped closed.  Also,
> > with the A.A.R. installed idle is 1200R.P.M., and 850R.P.M when plugged
> > with my finger;
>
> That sounds about right for a cold AAR (or an AAR that's stuck open.)
> You won't know which until the engine warms up.
>
How long is that with stock cooling, i.e. thermostat and flaps?  Seems to get 
warm much faster than the old engine, which had none of it.  Though, rebuilt
engines run a tad hotter until all is happy, or I.I.R.C., 6,000 miles.

> > Had trouble with the timing light killing the engine,
>
> I've seen this, too. Don't know why it happens sometimes.
>
well, good to know you have seen it... ;|

> > He checked the timing, which is jumping around seven to 10 degrees:
> > should it move this much?
>
> No, that's way too much. Is there side play in the dist shaft? Or is
> the dwell (point gap) set way wrong?
>
I did not notice any play.  Dwell was right in the middle of range.  F.Y.I.,
this is the one you got and rebuilt for me.


Thank you so very much! :D
Adriel