Quote:
Originally Posted by Rustinmotion
Just to be certain remove vacuum advance and plug manifold end, any difference?
Will it rev past 4k with no load if yes it's likely fuel or a blockage of intake or exhaust if no it's likely ignition related
Other thing to try is drive the car trying to get it past 4k and do an ignition cut that's ignition off and clutch in at same time and coast to. a stop, pull the ugs and see if its rich lean or ok, sounds like fuel starvation so it should rev higher under no load and the plugs should be light grey to white
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Thanks Rustinmotion,
My distributor does not have vacuum advance, it's purely mechanical. It does not rev past 4,000 RPM in neutral without load. I just checked timing at 4K RPM and it showed 33-34 BTDC. I pulled the plugs yesterday when I ran a compression test and they looked normal, not wet or covered in oil. They have approximately 3 miles on them.