re
Pull the coil wire?

NO !!!

two reasons ...
the coil will still be firing and sparks could jump around ,
and two , it's bad for the coil to fire without it's output getting to
ground.,

so ....
remove coil wire from middle of distributor and ground it  with a jumper
wire to the engine block.

In any case have a fire extinguisher handy.

'vacuum leak' fits the symptom ...so do check for those thoroughly.
I have found up to 10 simultaneous intake leaks between throttle body and
intake ports.

Scott
www.turbovans.com
----- Original Message -----
From: "Grungy" <grungy@GRUNGY.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, March 12, 2011 7:07 AM
Subject: injector test...

> While I've got the intake/injection system out, and I'm waiting for
> seals (this afternoon; ignore my previous request for part numbers),
> what advice do you have for testing the injectors and not setting
> everything on fire?
>
> Pull the coil wire?
>
> The injectors are still mounted in the intake manifold at this point.
> I'll go back outside and stare at disassembly in a minute, and see
> what else I can break while I wait for parts.
>
> The root of all this is still a variable idle and it goes GUG when I
> step on the gas sometimes. The engine gags. If I let up on the gas it
> idles again (albeit strangely). Eventually it will accept throttle
> input and go again and the idle settles down.
>
> The consensus here was "vacuum leak", given all of the other things
> I've already swapped with a known-good '90 parts van.
>
> cc a private reply please - I'm on the digest list.
> --
>
> bcnu - Grungy  (Houston, TX)  opinions are just that.obviously.
> 60 dddPanel 69 Bug 89 Carat 04 Jetta TDI 05 Jetta Wagon TDI
> g r u n g y AT g r u n g y DOT c o m