I was out riding most of the day yesterday. The bike was running normally. Towards the end of the ride my pipes started popping and backfiring. It just got worse & worse. Then the bike started to cut out or hesitate/lug/hiccup....I'm not sure what to call it. At stops the bike would not keep running unless I kept giving it gas. If I let it idle it would stall. Everyone seemed to think I had fouled a plug. I got the bike home and ran into the Harley shop at lunch and got some new plugs. I explained to the parts guy what the bike was doing and he also said I had fouled a plug. Well Sean put the new plugs in and the bike is still running the same. WTF! Does anyone have any idea of what else it could be? It ran fine all flippin day. What could have gone wrong so suddenly? HELP!!!!!!!!!

 

Bad gas? Rust in tank? Clogged fuel line? So many choices to choose from Heather...[:@]

 

have sean clean out the fuel bowl, and needle/seat...then check the fuel filter in the tank...

 

Letting it cool down right now, and gonna tare into the carb and check it.........Just started all the sudden yesterday after getting gas.......I filled up to so I am not thinking it is the bad gas.

 

FI or Carbed ?? and I also think Bad gas first off

 

Carb........alot of folks filled up at the same time and no one elses bikes have probs>>

 

Does it start right up?

It will also run chitty if it has low voltage.You might need to check out the ignition.

 

It starts but, unless you leave throttle to it, it shuts down.

 

Concur with the fuel diagnosis - but if multi scoots refueled together (same pump) it's more likely a clog somewhere in the fuel lines/carb bowl/fouled jets. If you were near empty, the pump splash could have just stirred something in the tank bottom. Shouldn't be too hard to resolve - - good luck!

 

I was thinking along these lines as well. Check all battery connections- both ends- check voltage at battery,
check all plug connections for loose,dirt or corrosion.