[Grady Clay]

Peter,

The distributor points have closed up so you are not getting spark (or intermittent).

Clean the points contact surfaces and reset to about 0.30 mm.
Be sure and check the timing at 6000 rpm – should not be more than 30º total advance.
Remember to use the highest octane premium fuel you can find.

Yes, check for your fuel flow.
Take a long fuel hose from the engine compartment after the fuel filter forward to the fuel fill cap.
Let the fuel flow for a while.
Measure the flow rate using a calibrated container and stopwatch: should be at least 0.90 liters/minute.

Best,
Grady