400 quits when gets to operating temp.

History:
Last year it got out of time because the gear on the shaft that drives the distributor was worn. I replaced the shaft/gear, rebuilt distributor; new cap, rotor, plugs, wires, points, and condensor. Also went through fuel system, put carb kit in carburetor.

Any ideas what is causing this?

Thanks,
Scott

To the contributor who mentioned "worn valves", I don"t think that is it because it is less than a minute from the time it acts up to the when it stops. It isn"t gradual power loss, and it sure does back fire.

Thanks for the info gang. It was a great first experience.

Scott in Wisconsin

Is it an honest to God actual backfire? That means it's electrical. Hows' about that coil?

Allan

Had a car one time that would do that and it turned out to be a condenser screw had come loose.

But, he says it is tempreature related. 'Bout gotta be that coil, me thinks.

Allan

And they are cheaper.

I almost killed an old man several years ago. He was dragging cedar trees for me with an A with a magneto. The condenser would get hot after about 20 minutes and the tractor would die. It was hand crank and he would crank it and fiddle with it until it cooled and started. He did this all day one day, thinking he was stalling it. When he finally came to the house and told me what he was doing we changed the condenser and fixed the problem.