Erik:
Sounds like classic vacuum leak symptoms. Check around the four  2"
rubber tubes that connect the head castings to the central air manifold.
I sprayed carb cleaner at the suspect area, since it is NON flamable the
RPMs dropped when it was sucked into the leak.
Drive Safely & Good Luck
Ken Lewis
86 VW Transporter Three Door Pickup
60 Porsche T-5 Coupe
85 VW GL Vanagon<Elvis>awaiting engine

On Tue, 19 Aug 1997 18:28:13 -0500 Erik Rhodes <ErikRhodes@platsoft.com>
writes:
> The idle is too high when it's warmed up (not before, it
>tends to be too low then) and when I hook up the tach meter and try to
>adjust it down to 950RPM, it falls down to around 650--700.  I try to
>adjust it up to 950, it flys up to around 1300.  It won't stay at 950.
>Erik