ok this bike has had all kinds of problems that i have been fixing. i got it running, but it will shut off randomly sometimes. i use it for short trips and went about 3 miles to subway and i shut off as i pulled into the parking lot, but then i drove it 6 mile right after that with no problem. any idea what my cause this. its a f2 1991 btw.

 

Ok I am missing a ton of info here. Does it just sputter and quit, or is it like an electrical problem where the bike just looses all power. Does it sound like it runs out of fuel? Might be a weak fuel pump in that case.

 

it just turns off, almost like i hit the kill switch. i can pop it into neutral while still moving and it starts right back up, and will keep driving.

 

This is electrical issue, most likely.
Due to that, you have to be very methodical and through to acheive success.

Always start with the harness/bones of the bike's electrical systems.
By starting your inspection/repair efforts there, you can systematically
eliminate potential problems and always be moving forward in the diagnosis.
Yes, sometimes it won't be the problem area, but now you know.

Test the battery first. Then inspect the entire harness.
Look for pinched/bare/damaged wiring.

Inspect all of the connectors, looking for melted/burnt/warpage (heat damage).
While you pull them for inspection, spray them with contact cleaner.
Finally fill them with di-electric grease.
Mark them with a sharpy and move on to the next one.

If you find any bad connectors, that's a flag.
Expand your inspection to any components attached to that connector.

If you follow this type procedure, as outlined, you won't keep chasing your tail.
The added plus to this? Even if the early stages don't fix the issue,
your harness needed the attention, anyway.
This is very cheap preventative maintanance for the future.
Long after you've addressed this particular issue.

Here are a few excellent links, to give you an over-view...

Charging System Diagnostics - Rectifier/Regulator Upgrade - Triumph Forum: Triumph Rat Motorcycle Forums

https://cbrforum.com/forum/f2-tech-9...-solved-27739/

Technical Resources - Resources for Electrical Systems on Motorcycles and ATVs - ElectroSport

Hope this helps, Ern

 

my bike does the same thing. 97 cbr f3. id ride for about 4 or 5 mile or sometimes better but it feel like its no gas going to it when it happens sputters then shuts off like im out of gas but i always have more than enough..smh but if i give it like ay least 10 15 min it will fire up..think i got trash in my tank .. its ..ive had this problem since i got it and still cant figure out the problem..my next option was the fuel pump. keep me updated on yours and ill do the same.