won't go above 58 to 60 mph

904jeff · March 21st, 2014, 04:39 PM

I have a 2010 250 that has 9972 miles on it I just got it and it was bogging down so I sprayed some carb cleaner in the intake and its running better no more flat spot in the rpms but I still can't get above 60 mph anyone know what I should do because I'm about to take it to the shop on Friday but don't want to

Whiskey · March 21st, 2014, 04:42 PM

Are you firing on both cyls? does it sound like it's running rough? & do both headers feel hot a few seconds after you fire up?

Alex · March 21st, 2014, 04:50 PM

Clogged air filter, clogged fuel filter, pinched fuel line, wildly out of spec valves, maybe a few more possibilities. If it's hitting 60 mph, it's unlikely to be running on only one cylinder, so it's less likely to be some electrical issue or plug issue.

904jeff · March 21st, 2014, 04:53 PM

Both are firing I tested both of them and have spark recapped the plugs cleaned the intake and readjusted the throttle I was thinking carb issue but tore the bike down to get the carbs out but wasn't able to do so because of the air box. It was running rough but after cleaning put the intake I got response back rides smooth but just won't go and it acts like a wind up toy at times and right one I'm hearing a whine come from the bike it is off

DaBlue1 · March 21st, 2014, 05:34 PM

I've seen this before....

Check your snorkel to see if anything that you may have had under the passenger seat may have escaped it's holding place a lodged itself inside or is partially block the airbox.

Other funny but relevant stories-

8000rpm and will not rev further

High RPM sputtering/bogging problem

DC2-12 · March 21st, 2014, 05:51 PM

when Is the last time the carb has had a good cleaning?

stubshaft · March 21st, 2014, 09:08 PM

If the revs are high and the speed is low than the clutch may be slipping.

quarterliter · March 22nd, 2014, 06:08 AM

You need to describe the problem better if you want better answers.

Motofool · March 22nd, 2014, 06:19 AM

Quote:

Originally Posted by 904jeff

.................I'm hearing a whine come from the bike it is off

Welcome to the forum, Jeff !!!

That sound could be the fan behind the radiator or the cap of the fuel tank.

If the first, keep an eye on the thermometer gauge and check that the needle is not reaching the red zone.
If so, take immediate action to correct it, as the engine can get damaged due to overheating.

If the second, the cap may not be venting correctly and if so, fuel cannot flow down into the carbs properly.

rc racer · March 22nd, 2014, 08:48 AM

Also, very simple to check. Make sure both battery terminals are tight using a 10mm socket, not a Phillips screwdriver.

Mine acted the same way when I got it, Wasted many hours cleaning carbs with no improvement. Then realized the battery cables where of questionable tightness. Snugged them up and it ran like a champ.

CC Cowboy · March 22nd, 2014, 09:20 AM

What's the speed limit there? It might not be legal to go over 60 MPH and the bikes knows it.

March 21st, 2014, 04:39 PM	#1
904jeff ninjette.org newbie Name: jeff Location: Brando FL Join Date: Mar 2014 Motorcycle(s): 2010 ninja 250 Posts: 2	won't go above 58 to 60 mph I have a 2010 250 that has 9972 miles on it I just got it and it was bogging down so I sprayed some carb cleaner in the intake and its running better no more flat spot in the rpms but I still can't get above 60 mph anyone know what I should do because I'm about to take it to the shop on Friday but don't want to

March 21st, 2014, 04:50 PM	#3
Alex ninjette.org dude Name: 1 guess :-) Location: SF Bay Area Join Date: Jun 2008 Motorcycle(s): '13 Ninja 300 (white, the fastest color!), '13 R1200RT, '14 CRF250L, '12 TT-R125LE Posts: Too much. Blog Entries: 7	Clogged air filter, clogged fuel filter, pinched fuel line, wildly out of spec valves, maybe a few more possibilities. If it's hitting 60 mph, it's unlikely to be running on only one cylinder, so it's less likely to be some electrical issue or plug issue. __________________________________________________ Montgomery Street Motorcycle Club / cal24.com / crf250l.org / ninjette.org ninjette.org Terms of Service Shopping for motorcycle parts or equipment? Come here first. The friendliest Ninja 250R/300/400 forum on the internet! (especially Unregistered)
	1 out of 1 members found this post helpful.

March 21st, 2014, 05:34 PM	#5
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	I've seen this before.... Check your snorkel to see if anything that you may have had under the passenger seat may have escaped it's holding place a lodged itself inside or is partially block the airbox. Other funny but relevant stories- 8000rpm and will not rev further High RPM sputtering/bogging problem
	1 out of 1 members found this post helpful.

March 21st, 2014, 09:08 PM	#7
stubshaft Rode with the Dinosaurs.. Name: Joe Location: middle of the pacific Join Date: Nov 2013 Motorcycle(s): '08 Ninja 250 Posts: 486	If the revs are high and the speed is low than the clutch may be slipping. __________________________________________________ *Fortune favors the brave!*

March 22nd, 2014, 09:20 AM	#11
CC Cowboy ninjette.org certified postwhore Name: Whodat Location: Ware Is.,MA Join Date: Jan 2009 Motorcycle(s): I pass the wind! Posts: A lot. MOTM - Mar '13, Jun '14	What's the speed limit there? It might not be legal to go over 60 MPH and the bikes knows it. __________________________________________________ If everything seems under control; you're just not going fast enough!

March 21st, 2014, 04:42 PM	#2
Whiskey ninjette.org certified postwhore Name: Morgan Location: A city twinned with Kawasaki Join Date: Nov 2011 Motorcycle(s): '08 Ninja 250, 2010 STR 675 Posts: A lot. Blog Entries: 1	Are you firing on both cyls? does it sound like it's running rough? & do both headers feel hot a few seconds after you fire up?

March 21st, 2014, 04:53 PM	#4
904jeff ninjette.org newbie Name: jeff Location: Brando FL Join Date: Mar 2014 Motorcycle(s): 2010 ninja 250 Posts: 2	Both are firing I tested both of them and have spark recapped the plugs cleaned the intake and readjusted the throttle I was thinking carb issue but tore the bike down to get the carbs out but wasn't able to do so because of the air box. It was running rough but after cleaning put the intake I got response back rides smooth but just won't go and it acts like a wind up toy at times and right one I'm hearing a whine come from the bike it is off

March 21st, 2014, 05:51 PM	#6
DC2-12 ninjette.org member Name: Dale Location: north carolina Join Date: Feb 2014 Motorcycle(s): 2008 ninja 250 Posts: 26	when Is the last time the carb has had a good cleaning?

March 22nd, 2014, 06:08 AM	#8
quarterliter ninjette.org guru Name: Kevin Location: Madison Join Date: Apr 2013 Motorcycle(s): 2004 Ninja 250 Posts: 465	You need to describe the problem better if you want better answers.

March 22nd, 2014, 08:48 AM	#10
rc racer ninjette.org member Name: robert Location: Dallas Join Date: Oct 2012 Motorcycle(s): 2015 R3, 1969 CB160, 2002 TTR125, 2007 KX250F Posts: 96	Also, very simple to check. Make sure both battery terminals are tight using a 10mm socket, not a Phillips screwdriver. Mine acted the same way when I got it, Wasted many hours cleaning carbs with no improvement. Then realized the battery cables where of questionable tightness. Snugged them up and it ran like a champ.

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