I would lean more toward the fuel gauge being incorrect.  Try putting
more gasoline in the tank and see what happens.

Mike

Jeff Oxroad wrote:
> Thanks for the quick responses!
>
> My pump runs continuously with the ignion on and engine NOT running and is
> making a air mixed with liquid sucking kind of noise. In fact, more correctly,
> it is pulsing on and off continuously.
>
> If working properly, how does the pump know to run for only a spurt when  the
> ignition is first turned on. Is there a pressure sensor that shuts off the
> pump when the correct fuel pressure is reached OR is it a timed power spurt
> controlled by a relay?
>
> I suppose I'm either dealing with a fuel blockage, low fuel, faulty pump,  or
> something more mysterious to me... faulty relay (?) loose or corroded
> connection. Guess I'll have to run some tests.
>
> The bus by the way starts fine and runs great for exactly 5 seconds. There
> seems to be enough fuel in the tank (1/4 tank) but the bus has been sitting for
>  6 mos. Ran fine when it was parked.
>
> thanks for any insight.
> Best,
> Jeff
> 83.5 Westy
> LA,CA
>