2001 RC51, trouble starting, and staying running

[gvr4311]

Just joined hoping someone can help me out...
Like I said I have a 2001 RC51, went riding last night and everything was great. Went out today and it took a few cranks longer than it ever has to start. Choke out and its warming up at about 900-1000 rpms (1300-1500 normal) its idling low and not smooth.
I give it a little bit of throttle and it stumbles hard and feels like its miss firing, you can hear poping comming from the air intake. I let it warm up to about 140 deg. release the choke and its idling @ 900, then gave it a bit of throttle and it stalls. Any throttle movement at all with the choke off will induce a stall it will also not restart, even warmed up, without the choke.


any help would be apreciated before i go to the dealer!

Thanks Gus

[gvr4311]

and just to add to this, I just pulled i back into my garage and going up the driveway i had to ride the clutch and keep the RPM's up around 4-6000 just to keep it from stalling.
And the Check Engine Light is not comming on

[TechTMW]

sounds like lean running on the idle circuit for a carbed bike...

but yours is fuel injected. If the plugs, air filter, fuel filter and gas tank vent are all trouble free you may have an efi glitch which will require a dealer.

[gvr4311]

this is what i was thinking, MAP sensor or maby the TPS. I was also thinking timing, but if I'm not mistaken the RC51 does not have a timing belt but is gear driven.

[gvr4311]

I love service advisors....

ME: were the plugs done?
SA: yeah we did them when the bike was traded in
ME: are you sure....
SA: yeah
ME: ok i will take it

So i just did my first set of plugs on the RC, not bad, thought it would be worse. But it runs great, again

[TechTMW]

Excellent work !