HarleyTechTalk

Howdy, welcome from Montana

Another thing to check is the connector at the ignition switch or the switch itself. Try lightly wiggling the switch and wiring whilst running and see if you can make it shut off. Looks for tell tell signs of green corrosion.   

Quote from: Fugawee on Today at 04:13:27 AMHello, and Welcome from Connecticut.

Thank you. I'm hoping to get up your way again some fall. I would like to knock Maine off the list of the last two states to which I have never been.

Quote from: rigidthumper on Today at 04:00:04 AMWelcome from just across the border (Missouri side)

Thank you. I love Missouri. It's one my top picks for my retirement state.

Quote from: Hossamania on Today at 05:46:38 AMHave you checked for vacuum leaks?

In the manifold? I have not yet.

Check your battery terminals.

Have you checked for vacuum leaks?

Having an issue with rebuild engine sputtering under acceleration around 3500 RPM. I added a new MAP sensor to the rebuild otherwise it was rebuilt the exact same as prior. Would the MAP sensor cause this or should I be looking at fuel pump and filter?

Quote from: TKO on Yesterday at 10:01:16 PMI recently bought a very low mileage 98 Fat Boy. I've put almost 1k on it in the last 3 weeks. The bike runs perfectly... most of the time. 3 or 4 times now, it has momentarily shut off while at speed. It acts like it's out of fuel even though the tanks are full. Then, just as quickly as it die, it fires right back up and runs perfectly for another 150 to 200 miles. Twice now it has died, again, as if it had no fuel or the ignition was shut off but, on these occasions, it did instantly fire right back up. Instead it left me scratching my head on the side of the road. Both times the bike started again after 10 to 25 minutes. The new peacock, new fuel line and carburetor newly cleaned by me leads me to believe this is not a fuel issue. I  think it may be an ignition issue. This bike still has the original electronic ignition. This is the newest road bike I have ever owned and it's the only bike I've ever owned that has an electronic ignition. If it had points, I wouldn't have any questions. Unfortunately, I know absolutely nothing about electronic ignition. Could this be a bad ignition?

Any information would be greatly appreciated.

Thanks

Check the wire coming from the cam sensor and trace it back to the ignition module.
My bike had a metal clamp along the wire that was not installed properly and was pinching the wire. Dealer never found it under warranty and ordered a whole new ignition system.
I fixed the wire and clamp and the stalling and ignition problems went away.
Still have the original replacement parts somewhere in my parts stash!
Worth a check anyway.
Good luck.

There's still some detail left out that would help. Are you losing "everything" including Lights perhaps?

Otherwise it sounds like possible vapour lock (gas cap not venting) but consider heat as well. Examine the main breaker to ensure it's not in a "hot spot" where it's subjected to a heat source (such as the oil tank).