Just realized that I omitted what may be an important clue.. it does NOT
stumble when the engine is cold or warming up.

Up until operating temp is reached one can trounce the accelerator and the
engine revs like you're a teenager at a stop light on Saturday night.

Thanks again!

Geo

On Wed, May 5, 2010 at 9:57 AM, Geo <ahwahneevw@gmail.com> wrote:

> 84 Westy, 1.9L, Manual --
>
> With the engine at operating temperature, when taking off from a stop...
> all is well if I gently depress the pedal, i.e. the engine revs nicely --
> but if I trounce the pedal too abruptly the engine stumbles...
>