It's official, for the first time in my life I own an American motorcycle. Picked up a 2004 XB12R Firebolt last week off of Craigslist. Only has 9,000 miles and came fitted with a full Micron exhaust, K & M air filter, race ECM, Pit Bull stands, oil and a new filter, even a service manual, all for $3200. She needs tires, brake pads, and a general tune but overall she runs strong and is very clean. So far it's been allot of fun riding and getting used to all the different sounds and vibrations it makes. Love the deep thump in the exhaust. I've set up the suspension according to the service manual and inflated the tires to spec. Will ride her as is until 10,000 miles and then do the full scheduled service. She stumbles right off idle if you open the throttle open too quick but no problem rolling it on. Not sure if that's just one of the characteristics of the bike. Also when starting it seems to stop for a split second at TDC and then "powers" past it and will fire right up. Any suggestions regarding the stumble? The guy said he had the fuel map tuned and set by a Harley dealer after he installed the Micron exhaust.
New XB12R Owner
- Thread starter Ivy Mike
- Start date
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Welcome to buellxb.com
Welcome to buellxb.com
Looks nice! That was a good deal IMO.
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This is a 'characteristic'. You will probably adapt your driving habit around it.Ivy Mike said:
My 2008 XB12R has done this since day one for me, even with a new and charged battery. I crank it using a two-step process: first blip of the starter button is to bump it against the compression stroke. Then after releasing the button for a few secs, I crank it normally and it fires up.Ivy Mike said:
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user_deleted
Well-known member
that's a beautiful bike at a great price. happy for you.
what ready said regarding your cranking to start. i call it "compression bump" and is standard fare for all large displacement high-compression big twins regardless of the V angle of the cylinders. the japs conquered it many years ago with ingenious cam operated compression releases. buells have no such gizmo. google: buellxb.com lunatic fringe compression bump and you'll see little diddy i authored regarding same.
your stumble
ften times resolved with tps reset and "learn mode" ride.....breather re-route to atmosphere....ground cable from negative battery cable to rear most coil mount bolt. all these combined help.Thanks ReadyXB & lunaticfringe for all of the helpful information, greatly appreciated. Glad to know that's just how the bike starts. Gives me confidence to know they all do that. I'll try your 2-step process next time I fire it up.
Regarding the stumble, I can look up in my service manual how to do a TPS rest, hopefully it's not too difficult. But I've done allot of searching on the forum here for how to properly take the bike for a "learn mode" ride. I've come across this very helpful nugget:
"ride in learn mode" parameters same after tps reset for XB's....BMW RT models....all H-D ride by wire models as well. in essence the guidelines are simple and approximates: after performing a tps reset on any XB ride sensibly for approx. 25 miles. no prolonged idling...no trips to redline...no full throttle pulls...no long steep heavily loaded up-hill trips. just ride sensibly and don't hammer the bike. also important to use proper start sequence during this time: key on for needles sweep....then run switch to on for system set-up....then start AFTER CEL light extinguishes.
My question is, do you need to do anything special to initiate or enter "learn mode"? Couldn't find anything on how to tell the bike to go into "learn mode", just the parameters during the ride.
Thanks again and ride safe. [up]
Regarding the stumble, I can look up in my service manual how to do a TPS rest, hopefully it's not too difficult. But I've done allot of searching on the forum here for how to properly take the bike for a "learn mode" ride. I've come across this very helpful nugget:
"ride in learn mode" parameters same after tps reset for XB's....BMW RT models....all H-D ride by wire models as well. in essence the guidelines are simple and approximates: after performing a tps reset on any XB ride sensibly for approx. 25 miles. no prolonged idling...no trips to redline...no full throttle pulls...no long steep heavily loaded up-hill trips. just ride sensibly and don't hammer the bike. also important to use proper start sequence during this time: key on for needles sweep....then run switch to on for system set-up....then start AFTER CEL light extinguishes.
My question is, do you need to do anything special to initiate or enter "learn mode"? Couldn't find anything on how to tell the bike to go into "learn mode", just the parameters during the ride.
Thanks again and ride safe. [up]
lawdog
Well-known member
The learn mode which not really an official term is John referring to riding the bike in closed loop, warmed up, and the correct rpm and tps to allow the bike to adjust for riding conditions. Technical term is closed loop learn. That's the simple answer. lol. Get the bike warmed up and ride it. When you are in the right cruise rpm and tps range the bike will adjust the air fuel value while in closed loop learn.
