81 550T stopped running

[mbautsch]

My 550t has just stopped running. If I let it sit for awhile it will grudgingly start and seem to run well for a few minutes then quit again. I rebuilt the carbs about 1500 miles ago and it has run great until last night. I pulled the carbs quickly and checked them, the bowls were full. I reinstalled them and it ran for about 5 minutes then quit again. The petcock is flowing good.

Any ideas?

Thanks,

Mike

[fgh]

That sounds like an ignition problem. They will often work OK when cold and die when hot. Does the spark fail or get very weak when it dies?

[Dave8338]

Check the fuel cap air vent...start it and when it quits, open the fuel cap and listen for a suction sound...it may be plugged.

[mbautsch]

I will check on the ignition system today.

The next morning after my problem it ran fine. I have limited the distance from home that I have ridden it since, but have not been able to replicate the problem. I actually wish it was still having problems, I can't diagnose a problem that does not exist. I'm afraid it will reappear when I get some distance from home.