I'd go with this too. A standard SU pump should deliver at least one
Imperial pint per minute, but in practice closer to two, in a steady series
of pulses with minimal bubbles. How did you check the timing? Did you do
an advance test? Stuck centrifugal advance could cause this as well.
Disconnect the vacuum pipe and plug the (presumably) carb port, then rev the
engine with a timing light on the marks and check it does advance. To make
things easier with the pulley notch against the TDC pointer (which I presume
are underneath) make a paint mark on top of the pulley where you can see it
from above so you can rev and watch at the same time, you are really only
interested in does it advance significantly when revved, not the exact
readings at this stage.
PaulH.
----- Original Message -----
> Have you done a fuel delivery test to see if the pump is suppling an
> adequate volume?
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