Thanks. Fuel filter was replaced when the rebuilt motor went in ~10k miles
and two years back.
If the fuel filter was flaky wouldn't that more likely lead to problems at
higher engine power, not when starting-off from stationary? There are no
issues with running at full bore.

On Wed, Dec 12, 2018 at 1:05 PM KIM BRENNAN <kimbrennan@mac.com> wrote:

> Air, Fuel, Spark. From your description it sounds like Air and Spark are
> okay...So, when was the last time the fuel filter was changed?
>
>
> > On Dec 12, 2018, at 3:58 PM, al sinclair <alvanagon@GMAIL.COM> wrote:
> >
> > Please help suggest a cause of a new problem in 1981 Westie (aircooled),
> > automatic not stick shift.
> >
> > Occasionally, a few times a day, there's no response from the engine when
> > pushing the accelerator pedal to accelerate from stationary. The pedal
> > moves normally, and the sound of the engine changes so I think the
> throttle
> > opens, but there's no change from idle, no increase of power for at least
> > several seconds. Then the engine behaves totally normally. I've begun
> > pumping the pedal when this happens but I'm unsure if it makes any
> > difference.
> >
> > The engine was rebuilt a couple of years back (lovely job by Greg Tuttle,
> > installed by Fred's Garage, runs like a dream) maybe 10,000 miles ago.
> It's
> > had oil changes but little else since then.
> >
> > Any ideas how to identify the cause will be much appreciated. The problem
> > isn't reproducible on demand, it only happens now and then - and can be
> > scary if I'm pulling out across the road.
> >
> > Thanks
> > Alan
>
>