Sounds like an exhaust restriction. My 86 has a small port before the cat
to check pressure. I checked it last year for grins and giggles. There
was less than 5 psi to below zero depending on RPMs. Yes negative
pressure, I guess evidence of good scavenge.
Drive Safely & Good Luck
Ken Lewis ,NC
86 VW Transporter Double Cab Pickup
60 Porsche T-5 Coupe
85 VW GL Vanagon<Elvis>lives again!

On Wed, 10 Dec 1997 14:15:57 EST JBrian65 <JBrian65@AOL.COM> writes:
<snip> The van runs ok but has no pick up. I press the
>accelerator and it feels like there is something causing it restrict the
flow of fuel to the engine.