Can anyone help? I have an 09 Road Star that in cold wheather, will not run right until it is hot. For about the first ten miniuts of riding, it starts to sputter and lacks power trying to get to normal speeds. I will pull over and rev it several times and get some backfire, and finaly it will run normal. Any suggestions?

Wow....that sucks. It sounds like a case of SVS brewing, and I think we all assumed that the fuel injection on 08 and 09 R*s would keep the mixture proper and prevent this scourge. Hope I'm wrong!

What kind of mods have you done? Any?

Also, do you tend to lug the bike at all? Or do you ride it fairly "rev happy"?

Those of us on carb equipped roadies have learned to keep the revs up a bit more and really rev it up at least once or twice each ride, if possible.

Keep us posted.

MS07

No disrespect inteneded but a brand new bike hasnt run long enough to have enough buildup on valves to have SVS(if by SVS you mean the sticky valve syndrome).

Even if it were a sticky needle & seat valve that a FI bike doesnt have it would not fun fine when warm vs hot. With a carb it would run poorly all the time with a sticky needle & seat valve casuing it run either too lean if it were sticking closed restirciting fuel flow or too rich if it were sticking open. But it would not not consistantly run poor cold and run absolutely fin hot every time too.

And him saying the bike runs fine when hot is an importatnt fact to remember here so its likey a cold start issue and thats pointing towards FI/ECM cold start circut functionality.

His 09 R* should be Fuel Injetcetd so it's obviuosly got issues with the cold start enrichment circut then when warms up is run fine . Could be a bad cold start sensor or bad connection at sensor not telling the FI /ECM that the motor is cold and to activate the cold start FI enrichment for cold start.

Then when motor gets to a prespecified temp the cold start or simple temp sensor tells the fi/ecm that the motor is now warm enough to run without cold enrichement anymore . Then at that time the fi/ecm will shut down the cold start enrichment and the fi/ecm changes to hot run mode,its a closed vs open loop thing when talking FI/ECM's.

Since its poping/backfiring when cold wanting to stall seems like it running too lean lke cold start circut thats supposed to be active when cold suplying more fuel untill motor gets to a specific temp isnt working properly.

Either way just curious why hasen't he taken it back o the dealer yet because they need to address that ASAP for yhim with it being a brand new bike.

Man,and i thought the Carb'd R* had issues,now a brand new R* has what seem to FI/fuel delivery related issues?(not again/umph!!!)

And i was thinking that maybe in future i would buy a used low miles FI R* to get away from its carb issues ,time will tell on that one as more prople with new FI R* join up here and post their experiences with thier FI R*'s.

But i dont think its ign/spark plug related because when it warms up he says it runs fine so it almost got the be the cold start enrichmenet within the FI untit that isnt working properly. The delaer can scan & watch as motor is warming up & hopefully see whats going or not not going on that should be with respect to cold start enrichment sensore/s & circut just before ECM changes to hot run when the motor runs fine according to the poster.

Many car's run a seperate cold start injector for more fuel when cold but i dont know about the R*.

I belive the R* has had FI since 2008 so you would think they would have had this corrected by now.

Oh wait,let me see,the R*'s had carb puke/spewing fuel out all over the hot motors for approx 7-8 yrs posing a considerable safety risk of fire and Yamaha did absolutely nothing about it so i hope this isnt going to be the same deal with yamaha's FI on the R* which i was hoping would be a good thing/upgrade for that bike.

Heneeds to get his new bike back to the dealer ASAP because he deserve's to have a new FI bike that runs right not stalling & backfiring thru the carb all over the place when cold.

Hope he lets us know how he makes out and what the problem was when they hopefully fix it.

Now watch it be partially fouled plugs from starting/stopping it too much at the dealer without really riding the bike to warme motor iup enough to get plugs up to normal op temps to clean them off before he bought it new causing the problems he's having.

I actually hope i am wrong thinking its a cold start issues with FI system & it's something simple like partially fouled plugs or a bad sensore connection which would mean the R*'s new FI is fine and he could have his new bike underway in no time.

Scott

I tend to agree with the SvS unfortunately. The symptoms you are describing sound exactly like what I just went through, it almost feels like the thing is flooding while you ride and when you pull in the clutch to rev it (resulting in a loud backfire) it runs alot better, but still weak, until you have to do it again. This continues for about 10 minutes and it's fine..... I ran Seafoam through it and it fixed it temporarily, but you should definetly get it back to the stealership.