2007 ninja 250r sticky throttle

wolfwithaninja · April 11th, 2016, 05:10 PM

just trying to figure why my throttle seems to be so sticky. i try reving the bike and it kills it sometimes, i probably need to get the carbs cleaned but it still doesnt make sense as to why when the bike is up to temp i can pull the throttle all the way back and have no response in revs from 2k and then have it kick back in at 8k. any ideas or help? please

jkv45 · April 11th, 2016, 05:32 PM

Quote:

Originally Posted by wolfwithaninja

just trying to figure why my throttle seems to be so sticky. i try reving the bike and it kills it sometimes, i probably need to get the carbs cleaned but it still doesnt make sense as to why when the bike is up to temp i can pull the throttle all the way back and have no response in revs from 2k and then have it kick back in at 8k. any ideas or help? please

Carb problems. Time to pull them and go through them - carefully.

I would say there is a blockage somewhere. With no load on the engine it doesn't take much throttle opening to rev up.

Read this section carefully a few times before working on them - http://faq.ninja250.org/wiki/How_do_...n_the_carbs%3F

Lazarus · April 11th, 2016, 05:37 PM

Does it start and idle fine?
Does it stumble from idle and you have to baby the throttle to get it going?
Is the Power intermittent and cuts out all throughout the rpm range?

Dirty carbs or vacuum leak would be my guess. But you may need to provide some more info to receive a helpful answer.

Do you have any mods on the bike? Or is it all stock?

wolfwithaninja · April 11th, 2016, 05:49 PM

all stock as far as i know. it does start and idle okay after its warmed up with the choke fully on. it left me stranded at walmart one day because it had been going perfectly fine and then the throttle kept cutting out on me which would kill the bike. :/

wolfwithaninja · April 11th, 2016, 05:51 PM

I would like to thank everyone who has/will reply, i really appreciate the help, just trying to get my bike running again so i can get off my permit and onto my actual license

Lazarus · April 11th, 2016, 05:52 PM

Going with jkv45 on this one. Give the carbs a thorough cleaning and that should take care of it.

wolfwithaninja · April 11th, 2016, 05:52 PM

Quote:

Originally Posted by jkv45

Carb problems. Time to pull them and go through them - carefully.

I would say there is a blockage somewhere. With no load on the engine it doesn't take much throttle opening to rev up.

Read this section carefully a few times before working on them - http://faq.ninja250.org/wiki/How_do_...n_the_carbs%3F

i have heard seafoam can work when bikes are having problems like these would it be worth it, or should i just go to a shop and have them cleaned?

jkv45 · April 11th, 2016, 06:26 PM

Quote:

Originally Posted by wolfwithaninja

i have heard seafoam can work when bikes are having problems like these would it be worth it, or should i just go to a shop and have them cleaned?

It's a long shot that a fuel system cleaner could take care of it, but you could try. It would take time, so make sure the bike is safe to ride - it sounds like it might not be.

I like Techron Concentrate better than Seafoam for serious cleaning, but I still don't know that it will fix the problem.

ducatiman · April 11th, 2016, 06:48 PM

Wolf-

there is no substitute for a comprehensive, physical cleaning

note your bike is 9 years old, coming out of winter storage, i'd guess?

modern ethanol fuels do not help at all, "dropping out" quickly

Motofool · April 11th, 2016, 07:09 PM

Quote:

Originally Posted by wolfwithaninja

.......why when the bike is up to temp i can pull the throttle all the way back and have no response in revs from 2k and then have it kick back in at 8k........

Your carburetors are the constant velocity type.
That means that you manually open the butterfly, but the injection of fuel into the airstream depends on the resulting vacuum induced by the engine during the intake strokes.

It seems to me that the one or both diaphragms could be damaged or the guides/slides are dirty enough to difficult the free up and down movement of the plunges/needles.

Link to original page on YouTube.

ducatiman · April 12th, 2016, 05:44 AM

^ very difficult pinpointing diagnosis via keyboard with info provided

the suggested carb pull/cleaning would reveal obvious faults upon disassembly and inspection

The correct repair path does entail going way beyond pouring some Seafoam in the tank, though.

wolfwithaninja · April 14th, 2016, 10:40 PM

i started her yesterday with the help of starter fluid but it seemed to only live off the starter fluid. revving it killed it after that, if that helps

ducatiman · April 15th, 2016, 05:33 AM

the induced fuel source is bypassing your clogged fuel flow from within the carburetor(s) thus allowing temporary running. Yes, a carb pull/inspection def necessary.

Lazarus · April 15th, 2016, 05:46 AM

^this

wolfwithaninja · April 18th, 2016, 10:38 PM

thanks you to all for the help. once i can get some vacation days off i will be pulling the carbs and hopefully cleaning them myself

April 11th, 2016, 05:10 PM	#1
wolfwithaninja ninjette.org newbie Name: Brett Location: iowa Join Date: Apr 2016 Motorcycle(s): 2007 ninja 250 Posts: 6	2007 ninja 250r sticky throttle just trying to figure why my throttle seems to be so sticky. i try reving the bike and it kills it sometimes, i probably need to get the carbs cleaned but it still doesnt make sense as to why when the bike is up to temp i can pull the throttle all the way back and have no response in revs from 2k and then have it kick back in at 8k. any ideas or help? please

April 11th, 2016, 05:51 PM	#5
wolfwithaninja ninjette.org newbie Name: Brett Location: iowa Join Date: Apr 2016 Motorcycle(s): 2007 ninja 250 Posts: 6	thanks for the help. I would like to thank everyone who has/will reply, i really appreciate the help, just trying to get my bike running again so i can get off my permit and onto my actual license

April 11th, 2016, 06:48 PM	#9
ducatiman ninjette.org certified postwhore Name: Gordon Location: new york Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot. MOTM - Nov '18, Mar '17	Wolf- there is no substitute for a comprehensive, physical cleaning note your bike is 9 years old, coming out of winter storage, i'd guess? modern ethanol fuels do not help at all, "dropping out" quickly __________________________________________________ gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com

April 12th, 2016, 05:44 AM	#11
ducatiman ninjette.org certified postwhore Name: Gordon Location: new york Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot. MOTM - Nov '18, Mar '17	^ very difficult pinpointing diagnosis via keyboard with info provided the suggested carb pull/cleaning would reveal obvious faults upon disassembly and inspection The correct repair path does entail going way beyond pouring some Seafoam in the tank, though. __________________________________________________ gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com

April 15th, 2016, 05:33 AM	#13
ducatiman ninjette.org certified postwhore Name: Gordon Location: new york Join Date: Sep 2009 Motorcycle(s): '95 DUCATI 900SS/SP '07 DUCATI SS800 '19 HONDA CBR650R Posts: A lot. MOTM - Nov '18, Mar '17	the induced fuel source is bypassing your clogged fuel flow from within the carburetor(s) thus allowing temporary running. Yes, a carb pull/inspection def necessary. __________________________________________________ gordon@customcarbservices.com Custom Carb Service www.customcarbservices.com

April 11th, 2016, 05:37 PM	#3
Lazarus ninjette.org member Name: RJ Location: PA Join Date: Dec 2015 Motorcycle(s): 2008 Ninja 250 Posts: 210	Does it start and idle fine? Does it stumble from idle and you have to baby the throttle to get it going? Is the Power intermittent and cuts out all throughout the rpm range? Dirty carbs or vacuum leak would be my guess. But you may need to provide some more info to receive a helpful answer. Do you have any mods on the bike? Or is it all stock?

April 11th, 2016, 05:49 PM	#4
wolfwithaninja ninjette.org newbie Name: Brett Location: iowa Join Date: Apr 2016 Motorcycle(s): 2007 ninja 250 Posts: 6	all stock as far as i know. it does start and idle okay after its warmed up with the choke fully on. it left me stranded at walmart one day because it had been going perfectly fine and then the throttle kept cutting out on me which would kill the bike. :/

April 11th, 2016, 05:52 PM	#6
Lazarus ninjette.org member Name: RJ Location: PA Join Date: Dec 2015 Motorcycle(s): 2008 Ninja 250 Posts: 210	Going with jkv45 on this one. Give the carbs a thorough cleaning and that should take care of it.

April 14th, 2016, 10:40 PM	#12
wolfwithaninja ninjette.org newbie Name: Brett Location: iowa Join Date: Apr 2016 Motorcycle(s): 2007 ninja 250 Posts: 6	i started her yesterday with the help of starter fluid but it seemed to only live off the starter fluid. revving it killed it after that, if that helps

April 15th, 2016, 05:46 AM	#14
Lazarus ninjette.org member Name: RJ Location: PA Join Date: Dec 2015 Motorcycle(s): 2008 Ninja 250 Posts: 210	^this

April 18th, 2016, 10:38 PM	#15
wolfwithaninja ninjette.org newbie Name: Brett Location: iowa Join Date: Apr 2016 Motorcycle(s): 2007 ninja 250 Posts: 6	thanks you to all for the help. once i can get some vacation days off i will be pulling the carbs and hopefully cleaning them myself

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Oil Leak and Sticky Throttle	hamburglar	1986 - 2007 Ninja 250R Tech Talk	12	June 4th, 2014 05:11 PM
[2009 250R] Sticky Throttle (?) + Poor Idling	255	2008 - 2012 Ninja 250R Tech Talk	8	May 30th, 2013 01:00 AM
possible sticky throttle?	gt_turbo	2008 - 2012 Ninja 250R Tech Talk	4	April 9th, 2012 03:53 AM
brand new Ninja, stiff/sticky throttle	reaubideux	2008 - 2012 Ninja 250R Tech Talk	5	April 4th, 2011 11:08 AM