Total Motorcycle Community Forums

1. Engine completely rebuilt a few years ago - running fine
2. Full tank
3. New AGM batttery
4. Start engine - runs fine - drive 1 mile and stop for 30 min.
5. Get back on bike. Engine restarts fine.
6. Idle for a minute with petcock on Fuel
7. Suddenly - engine starts to die, as if there is no gas.
8. Crank engine - won't restart
9. Set petcock to Prime and crank again.
10. Eventually engine restarts.
11. Idle with petcock on Prime for a minute.
12. Engine again dies as if there is no fuel.
13. Restart engine with petcock still on Prime.
14. Engine restarts eventually.
15. Move Petcock back to 'Fuel and ride bike a few miles - runs fine.

What's going on ?? Has never happened before.

Thanks.

Check the intake boots if there's any crack.

Could be a lot of things but I suspect a failed vacuum diaphragm in your petcock, or the hose that provides it, or sticky floats.

I had to pull my fuel valve and clean the vacuum chamber of dirt.

I had the exact same bike and mine did something like that for a month till I figured it out. With mine it was the left rear turn bulb causing a short, the bulb was rusty on the end of it, once I replaced it, all fine. So I'd recommend checking all your bulbs. Yes, odd suggestion, but it worked for me.

Also, check both ends of your battery ground as well.

Mike

Side note on this thread: welcome back zootech! Been what? 12 years? Lol

NorthernPete wrote: ↑Mon Dec 23, 2019 3:01 am Side note on this thread: welcome back zootech! Been what? 12 years? Lol

Yes, I believe that's about right! Was quite surprised to find my username still worked after all this time...