Toyota Diesel Problem

Thanks for the assistance.

Armed with your thoughts and a "specialist's" estimate of $500 to $2,000
to remove and identify the problem in the pump, I started a search for
more finite symptoms.

After removing the fuel input to the pump and supplying fuel from a can,
the motor worked fine. I then eventually chased the problem to an almost
totally blocked fuel pickup in the tank. It seems that the pump was
cavitating when higher volumes were required, and the extra height to
lift the fuel when going up hill made all the difference. Unblocked with
a straight length of 1mm spring wire.

Thanks again
Peter johannsen

Steve,
That hand pump is where the delivery pump is located...

Steve,
It wasn't there, but you sure helped me isolate it. It was the suction pipe inside the tank.
Regards,
Peter