12-09-2019, 10:02 PM
Just going back to John Mason’s last point. Are you sure the battery is good? Particularly with a new engine the current to drive the starter can cause enough voltage drop to prevent the coil from firing. Added to that, an engine does need a minimum cranking speed to get going. Could you either try a 12v battery (if you are on 6v) or maybe a separate battery to the coil, or even just a tow start. One of my race engines, with a lot of valve overlap and next to no static compression, needed a tow start at 30mph for its first start up. It was ok after it had run a few minutes.
Alan Fairless