"The engine will start, run fi
"The engine will start, run fine for a period of time, over an hour at idle, less than that at speed, then it rumbles for a few seconds and shuts down. After a few minutes it will turn over, backfire, turn over some more, then restart and do it all over again.
The timing is set about 12 degrees off TDC at a fast idle (1200 RPM), and about 30 degrees at speed (3000 RPM).
It has a new timing belt, tensioner, timing wheels (gears), new points, plugs, ignition coil. I haven't changed the spark plug wires.
I cleaned all the electrical contacts in case it was an electrical problem. I installed a shunt with a toggle switch around the ignition switch, but that didn't help.
My thinking now is a fuel problem.
Any ideas?"
"The engine will start, run fine for a period of time, over an hour at idle, less than that at speed, then it rumbles for a few seconds and shuts down. After a few minutes it will turn over, backfire, turn over some more, then restart and do it all over again.
The timing is set about 12 degrees off TDC at a fast idle (1200 RPM), and about 30 degrees at speed (3000 RPM).
It has a new timing belt, tensioner, timing wheels (gears), new points, plugs, ignition coil. I haven't changed the spark plug wires.
I cleaned all the electrical contacts in case it was an electrical problem. I installed a shunt with a toggle switch around the ignition switch, but that didn't help.
My thinking now is a fuel problem.
Any ideas?"