[T3] Vacuum Leak

[Jim Adney]

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.

> 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.

> Had trouble with the timing light killing the engine, 

I've seen this, too. Don't know why it happens sometimes.

> 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?

-- 
*******************************
Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
*******************************