Hi Tom:

I occasionally get the same problem - and I'm kinda stumped.

I have a digitool, so I can see that my AFM is OK.

My throttle switches are working fine, as is the TempII sensor..

However, I seem to notice the problem less after I fill up the tank. Get's
worse when the tank gets nearer empty.

This leads me to think it's a fuel starvation issue - perhaps I have a
cruddy fuel filter - maybe you do too.

Or - perhaps it is a fuel pressure problem - caused by the pressure
regulator.

As soon as I learn how to use a fuel pressure gauge, I'll know for sure!

Marshall Ruskin
84 Westy

>I would appreciate some assistance in diagnosing a problem we are having
>with our 90 Westy.  We recently had the engine rebuilt due to a broken
>cylinder head stud.  Then engine runs great except for a hesitation when
>accelerating.  The problem is most evident when pulling away from a stop
>light or stop sign.  I sometimes feel it when I'm accelerating in traffic.
>
>Here's a decription of my perception of the problem.  I'm stopped at a stop
>light and it turns green.  I'm a gentle driver so I depress the accelerator
>peddle 1/8-1/4 full travel.  The car just rolls forward as though I've
>released the brakes but not given any gas.  Then 1-1.5 seconds later the
>car will start to respond to the accelerator input.  Full accelerator input
>results in normal rapid vehicle acceleration for that pedal position.
>
>I have the following suspicions and would appreciate any feed back on these
>or other possible causes:
>
>1) My airflow meter is failing and the vechicle is accelerating when the O2
>sensor corrects the mixture.
>
>2) The bypass on the airflow meter is not set correctly.
>
>3) I have a bad temp sensor (though this problem appears to be independent
>of operating temperature.
>
>4) Others?
>
>Thank you for any assistance,
>
>Tom Moritz
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>*       From the computer of:   *
>*           Tom Moritz          *
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