Yep- Bad MAP sensor will cause you to run rich no matter how to mess
with the mixture. I would take it to a dealer or have him take it to a
good vw shop and install a new one. Get the part# from peter's web page.
Warranty! Oh yeah, first see if changing the mixture has NOTHING to do
with this problem.  Other thing it could be is a loose distributor which
would be changing the timing, but it'd have to move about 1" to be past
the automatic-timing ability of the engine. BTDT!

MAP= manifold absolute pressure (or something like that...)

Hobie (a wet westian had that problem). But the good news is that peter
can get them to in 4 months flat!
matthew

Karl M wrote:
>
> My customer, for whom I recently installed the Tiico into his '84 Westy,
> called today to report a miss or rough running issue at idle that has gotten
> progressively worse, to the point that it continues into the powerband. Have
> any of you experienced this, and what did you find as the culprit? I've
> already sent him on his way (no real problem when he left) but he is headed
> west next week and will be out of range for my help then. I'd appreciate any
> input, as I'm thinking ignition wires, but then it's kind of difficult to
> diagnose by phone. Thanks!
>
> Karl Mullendore
> Westy Ventures
> 1987 Westfalia Syncro 1.9TD