Question about 2003 Buell Lightning XB9S

1 Answer

Flat spot when in first and second gear only when opening throtel

When i pull off and accelarate quickly it feels like the bike has feul starvation or a flat spot

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 69 Answers

If it is carburated thehe jetting in the carbs checked, if its fuel injected then adding a power commander so that the fuel mixture can be tuned would be reccomendad.

Posted on Mar 11, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I have a 03 yamaha vstar 1100 classic and here latley when accelerating hard in second gear the bike seems like the transmission is skipping (not slipping)... any ideas as to what in the tranny is causing...

Sounds like a bent shift fork. While accelerating you can feel the power cutting in and out quickly. The problem will get worse if you keep pushing 2nd gear till it slips. You can learn where (at what RPM) it wants to jump out and start shifting before it jumps out. The long term fix is opening the transmission and fixing the bent shift fork.

Oct 03, 2013 | 2003 Yamaha V Star 1100 Classic

1 Answer

Wont go over 3000 rpm

Any codes? Blocked fuel filter and/or damaged fuel lines?

Sep 13, 2013 | Toyota Land Cruiser Cars & Trucks

1 Answer

2000 gsxr600y Flat spots and rough running at 8 and 11 thousand rpm, won't pull passed 11000 from 4th gear up as running so rough

Full disassemble of carbs is needed. Thorough cleaning on jets and airways, vacuum and pilot screw adjustment must be done too.
Check the spark plugs for lean mixture indication and replace them if necessary.

Oct 20, 2012 | 2000 Suzuki GSX-R 600

2 Answers


Please check your spark plugs , if they are ok , then check if there is any wiring problem , or a loose connection somewhere, the bike would normally **** because of a bad spark plug or plugs.

May 09, 2011 | Yamaha XPeed 50R Motorcycles

1 Answer

I have a 98 HD softail with a 5 speed EVO. It seems to be having trans issues. It fill grab for a split second in 5th gear and 5th gear only. It will happen about every 5 to 10 seconds. I can feel it...

Well, I've have heard of this problem before but I've never seen it for myself. I wrote a opinion here just the other day concerning this problem in a 1990 bike.

This is unusual. I'm afraid that if your transmission is doing this, you are going to have to do at least a partial teardown of the transmission.

I could be that the shifter cam is not rotating fully to put the 5th gear clutch dog into gear. This would cause just the tips of the lugs to be driving the final drive gear. And, it could jump out and back in from time to time.

Now, why the shifter cam is not rotating fully is the question. If the rest of the gears seem to be shifting fine, I wouldn't think it was the shifter pawl but it could be.

If it were mine, I'd remove the exhaust system and whatever else needed to gain good access to the the transmission top cover. Remove the cover and raise the rear of the bike off the ground. Now, you can shift the transmission and watch the actions of the shifter cam. Pay particular attention to the 5th gear shifter fork. See how much "play" the fork has once it's shifted into gear. You may spot something wrong there and be able to repair the problem without pulling the transmission out of the frame. If not, you may have to pull the entire transmission or at least the trap doors with the shafts to inspect the final drive gear. You may wind up replacing the final drive gear if the clutch dog has been jumping in and out of gear.

One other thing. Have you checked your front belt pulley? I've seen the splines in the pulleys wear to the point that they just strip out and won't pull the bike in any gear. Check that before you start tearing down the transmission. Usually when this happens, (excessive wear on the front pulley) it is accompanied by a small transmission fluid leak. If you ride the bike and park it, it'll leak a spot about the size of silver dollar. If you wipe the spot up, it won't leak again until you either ride the bike again or start it up. Then, it'll leak again. The transmission fluid is leaking past the "quad seal" behind the pulley.

Good Luck

Dec 21, 2010 | 2000 Harley Davidson FXST Softail Standard

4 Answers

How do i on a motorcycle go to first gear from 5th

hi, if when you start your bike you press the gear lever down to go to 1st from neutral and then pull it back up to go to 2nd,3rd,4th and 5th then the only way to get back into first gear is to press the gear lever down 4 times to get it back into 1st gear their is no quicker way to do this you have to work your way back down the gears.

if your coming to a stop quick then just pull the clutch in and keep pushing the lever down until it dont push down any further it will only go down 1 gear at a time so you will need to push it down 4 times but you dont need to count you can just keep pressing it down the gears until it dont go down any more then you know this is first, you need to keep the clutch in when doing this.

how ever if your slowing down is more gradual then what you can do is go from 5th down to 4th then let engine slow the bike down then when the revs drop down change down to 3rd and so on until you get ot 1st gear.

if your coming to a stop quick say at lights or junction then if the bike is in 5th gear then you can change down the gears once the bike has stopped just hold the clutch in when you stop and keep tapping the gear lever down until you feel that its not going down any more gears this way you know its in 1st without having to cound down the gears, their id no quicker way of going down the gears to get to 1st.

i hope i have read your question right and gave you the answer you was looking for if i got the question wrong then please explain then i can assist you further ok

May 23, 2010 | 2005 Yamaha Xv 250 Virago S

1 Answer

Clutch slipping in second gear only

Wave washer on the face of the clutch basket may have lost its tension, clutch friction plates may be wearing thin as she's an old girl. Some automotive (car) oils not specifically designed for wet clutches when used in a bike will cause the clutch to slip as they are designed to leave a deposit on friction areas. This will require a thorough flush and a few oil changes in quick succession.
Check the return function of the clutch release arm on the crankcase, they can bunch up the rubber shroud and not return fully. Good luck and Cheers.

May 02, 2010 | 1982 Suzuki Gs 550 L

1 Answer

03 stratus missin upon accelaration

I think you should OBD 2 scan and see if it is miss fire ign wires are usually bad this time of year! scan it before you guess that adds up quick$$$$$$$$

Dec 23, 2008 | 2003 Dodge Stratus

Not finding what you are looking for?
2003 Buell Lightning XB9S Logo

Related Topics:

175 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buell Experts


Level 3 Expert

77194 Answers


Level 2 Expert

342 Answers


Level 1 Expert

41 Answers

Are you a Buell Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides