1982 Yamaha 650 Seca XJ650RJ - idle dies

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alexp
Tricycle Squid
Tricycle Squid
Posts: 1
Joined: Mon Oct 24, 2011 1:44 pm
Sex: Male
Years Riding: 40
My Motorcycle: Yamaha XJ650J Maxim

1982 Yamaha 650 Seca XJ650RJ - idle dies

#1 Unread post by alexp » Sat Jul 27, 2019 2:19 pm

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.

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