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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through November 17, 2005 » XB9SX Stalls Under Hard Braking « Previous Next »

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Ejiii
Posted on Saturday, November 12, 2005 - 09:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Was breaking in a new set of brake pads on my '05 XB9SX. When I braked hard from 40mph the bike would stall every time. It would stall most time when hard braking from 20mph. All other performance is good, starting hot/cold, idle, accel normal/hard, steady cruise etc. Any ideas?
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Guzzimon
Posted on Saturday, November 12, 2005 - 09:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Try pulling in the clutch?
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Dagwood
Posted on Sunday, November 13, 2005 - 01:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Make sure that you have plenty of gas in the tank. Fuel tends to slosh forward when braking hard/ doing stoppies.
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Tank_bueller
Posted on Sunday, November 13, 2005 - 09:20 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Try pulling in the clutch?

LOL

Seriously, I try to keep the tank above about 1/3 full. I would hate to be in an emergency/avoidance situation(brake hard, then gas-it hard) and have the bike stall.....that would suck real bad.
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Ejiii
Posted on Sunday, November 13, 2005 - 12:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The bike should not stall with a low fuel tank under hard braking. I'm not doing stoppies, I was breaking in a set of brake pads. If that's the case then when someone gets killed because they could not get gas before they encountered a hard braking situation Buell is going to have a real problem. Where in the owners manual, shop manual or any other public Buell communication does it say you must have a certain fuel level in the tank or the bike will stall under hard breaking, now come on. I have owned two other injected bikes and about 30 bikes with carbs, on and off road and none of them stalled under hard braking. So does anyone have any real suggestions?
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Tq_freak
Posted on Sunday, November 13, 2005 - 12:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

that is a real suggestion, the XB platform is known to do that. this was more common in the 03's but mine stalled on me once in my driveway under hard breaking while the fuel light was on.
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Whodom
Posted on Sunday, November 13, 2005 - 12:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Ejiii,

This problem has been mentioned here before. The fuel pump was changed during the 2005 production year to correct this problem. See here:

http://www.badweatherbikers.com/buell/messages/32777/149463.html

You might call Buell customer service and see if you can get the upgraded pump.
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Ejiii
Posted on Monday, November 14, 2005 - 03:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thanks for the info. I can't believe NHTSA or someone hasen't required a mandatory recall for something like that. Maybe when a couple of people die Buell will do something about it. Oh well.
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Dave
Posted on Monday, November 14, 2005 - 04:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

With a viewpoint like that Ejiii, maybe a MSF course is in order? If a rider dies because their bike stalled during hard braking it's because they hit a object. Perhaps you can just look into getting yours updated. It shouldn't equate to a life/death situation. Rather a simple action and shouldn't warrant so much emotion.

DAve
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Ginzero
Posted on Monday, November 14, 2005 - 04:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

An 05 XB9SX should not have that problem, I would take it back for inspection and possibly warrenty work.

(Message edited by ginzero on November 14, 2005)
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Fullpower
Posted on Monday, November 14, 2005 - 04:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

perhaps your idle speed is set a bit low?
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Spiderman
Posted on Monday, November 14, 2005 - 04:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Ok ladies break it up!

CHeck under the seat to make sure the battery cabels haven't rubbed thru or the ECM or any other wires have came loose.

Also check the tip over sensor too. If it is loose or has came off, braking could be making it "trip"
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99buellx1
Posted on Monday, November 14, 2005 - 04:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)


quote:

An 05 XB9SX should not have that problem, I would take it back for inspection and possibly warrenty work




Not true, the fuel pump was a running change, so depending on date of manufacture, it could have the old pump.
Mine does.
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New12r
Posted on Monday, November 14, 2005 - 05:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Mine only stalls on long very vertical stoppies.

You can also buy a bigger fuel filter to correct the
problem.
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Tank_bueller
Posted on Monday, November 14, 2005 - 06:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

O.K.....

Contrary to the way my post sounds above, I have run the tank pretty near dry and never actually had this problem.

I may just be paranoid due to stories on this site and others.
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Spatten1
Posted on Monday, November 14, 2005 - 07:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Mine stalls horribly at the track after braking if the tank isn't full. Not cool at all, I could easily get rear-ended. I hate carrying extra fuel in the tank at the track, but replacing the fuel pump is expensive so I haven't done it.

That said, it has only happened after really hard braking from 100+ mph with fuel low.
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Ginzero
Posted on Monday, November 14, 2005 - 07:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

"

Not true, the fuel pump was a running change, so depending on date of manufacture, it could have the old pump.
Mine does."

Yikes!! I did not know that.. I wonder when they started using the new pumps. I think mine was built in April.
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Buellin_ri
Posted on Monday, November 14, 2005 - 08:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

This happened to me once at night. I was going a little to fast (as always) and a turn came up. Put the brakes on and the bike stalled. Didn't think I hit them that hard but I was moving at a good pace. Fuel light was on, I think thats why I was going fast trying to get to a gas station.
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Spike
Posted on Tuesday, November 15, 2005 - 11:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

IIRC- the new pumps came along in September of the '05 model year, so a bike built after Sept '04 should have the new pump.

Can anyone confirm that the new pump will not allow the bike to stall under braking? I don't have the ~$300 to replace the pump right now anyway, but if I knew for sure that the new pump is capable of making the bike run properly then I could at least add it to my wish list.
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Kootenay
Posted on Tuesday, November 15, 2005 - 03:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My bike has this exact problem--it'll stall under hard braking if the fuel tank is below half full--and although I don't think it's a safety hazard, it surely is an annoyance. One dealer I've spoken to has agreed that it shouldn't happen, and when I get the bike to them (they're 8 hours away, and there's snow on the ground these days) they've promised to look into it.

It would definitely seem to be fuel starvation from the fuel sloshing forward in the long/narrow tank...personally, I think Buell should set up a voluntary service update or whatever it's called, so anyone who complains of the problem (and their bike is tested and found to have it) can get the pump replaced, or whatever needs doing.

These bikes are supposedly intended for aggressive riding--it's not unreasonable to assume they're gonna be braked hard on occasion, and sometimes with a low fuel level.
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Mikej
Posted on Tuesday, November 15, 2005 - 03:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Thinking about it, that would not be a good thing to happen on a track day, or if a bear or moose got in your way and you had to make a quick stop u-turn beat it out of there escape.
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Swissrob
Posted on Tuesday, November 15, 2005 - 03:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Hi all,

I have an 05 City X and it will also stall when braked hard with the fuel light on.Happend today as a matter of fact.
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Fullpower
Posted on Tuesday, November 15, 2005 - 05:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

gentlemen: this is NOT normal behaviour. Your bike should continue running during and after "hard braking" mine does not shut off during braking, craig jones managed to keep his XB9 motor running during 600 plus feet of front wheel-only stopping. i have at close range watched a stunt team mercilesly hammer a pair of XB12's for a full hour, the motors never shut down.
The condition you are describing is indeed a problem. if your bike is broken in that manner i suggest that you either FIX it or take it to a professional mechanic and have it fixed.
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Trojan
Posted on Wednesday, November 16, 2005 - 05:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

gentlemen: this is NOT normal behaviour

I would disagree with you there Fullpower. Our race bike did exactly the same, as has everyone else I have spoken to who has raced them. The answer on the track is to put Xplosafe foam in the frame/tank to stop the fuel sloshing to the front under hard braking, or to run with a full tank all the time. I don't know how the new 2005 fuel pump will help, as the problem isn't with the pump at all, but with fuel starvation. Unless of course the new pump has some kind of baffled reservoir that keeps some fuel there under braking that is.

Craig Jones probably had the foam in his tank when he did the stoppie record, or an auxiliary fuel tank in the nose of the fairing.
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Captainplanet
Posted on Wednesday, November 16, 2005 - 10:59 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Mine has done that once. Same symptoms as others. Fuel light was on, I did an emergency stop, the bike just died. Started right back up after that.
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Mikethebike72
Posted on Wednesday, November 16, 2005 - 01:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The new pump has the regulator overflow exiting at the fuel pump inlet.
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