Reply To: ’54 Fleetwin – wont run on low speed

[wedgie]

I would double check that it is running on both cylinders. Those motors will seem to run ok (but with little torque) on one cylinder at higher rpm,but will die when throttled back. Get it running and pull the plug wires off (and replace ) one at a time and see what happens. If it stays running (but hitches up a bit,) when either plug is pulled, then it is getting spark on both .If it dies when one or the other plugs is pulled , then the one that causes it to die is the good one..

This test is dependant on the carb being set up close to properly, so you’ll have to sort that first and replace that welch plug etc.