2010 Ninja 250R RPM question.

misterangelo · September 2nd, 2015, 05:34 AM

Hi everyone,

I know I'm posting this in the general section. The reason being is I'm assuming someone else with a different bike may have this problem. Now I recently purchased a bike from a lady with 450KM on it. Not sure how well maintained it was but I bought the bike. I bought a 2010 Ninja 250R. Now, when I warm up the bike the idle sits at like 1400 rpm and the rpm hangs and slowly comes down after I give it throttle. I took it out on the road for the first time yesterday and filled it with gas. Drove around for a bit and then I noticed when I was at a red light, my rpms were like 2-3K. Now is this normal? Any suggestions what could be wrong? I still have to do an oil change, planning on doing that this over the long weekend. Any help is greatly appreciated. Thanks!

Alex · September 2nd, 2015, 05:35 AM

/moved to new-gen tech

Could be an air leak, or the bike could need its carbs cleaned of deposits.

misterangelo · September 2nd, 2015, 05:50 AM

Quote:

Originally Posted by Alex

/moved to new-gen tech

Could be an air leak, or the bike could need its carbs cleaned of deposits.

Sorry and Thanks. How and where would I check if it is an air leak?

Bob2010 · September 2nd, 2015, 05:54 AM

Well if you have very low RPMs on a cold start and didn't use your choke - that would make sense. Once the bike warms up it will idle higher where it is set to idle by the idle knob by your left knee

misterangelo · September 2nd, 2015, 05:57 AM

Quote:

Originally Posted by Bob2010

Well if you have very low RPMs on a cold start and didn't use your choke - that would make sense. Once the bike warms up it will idle higher where it is set to idle by the idle knob by your left knee

Ideally, where should the idle be at when the bike is warm? When I rode the bike for a few mins my rpm was at 2-3K at a red light? Would that considered be normal? Or should I tinker around the idle knob?

Thanks.

Bob2010 · September 2nd, 2015, 06:03 AM

From what I recall when I asked the same question - was 1,300 to 1,500
I swear some one here said 3,000 but I feel that's too high and I lowered to about 1,500

Ducati999 · September 2nd, 2015, 06:08 AM

DO NOT CHANGE THE IDLE SPEED YET. First try running some carb cleaner thru the bike. Since you said the idle "hangs" before it comes down, this indicates either a too lean condition or the slides are sticking or both. Since you are unsure how the bike was maintained and it has only 450ish KM and is nearly 5 years old, I would assume the bike has sat for a time. Run a full tank of fuel thru it with a good amount of Carb cleaner (I like SEAFOAM) any kind should help. You can ride the bike as long as it remains a minor issue and you feel safe just be aware the issue may suddenly (although unlikely) get worse. After a full tank of cleaner and fresh fuel you should see improvement if not then ask about how to find an air leak. You may have to adjust the idle after the fuel and cleaner do their job. I have my bike set to 1100 but I am sure there is a "Factory Recommended" RPM

Good luck

Bob2010 · September 2nd, 2015, 06:15 AM

Yeah less then 300 miles and he already put fresh gas in it - just ride it until you can crack the throttle and it doesn't bog anymore. Assuming if things were junked up that badly , you probably have bogging issues too when throttle is applied. At least that's always the case for me when the bikes sit all winter.
Probably be wise to check your tires for cracks and dry rot. Change the oil

Each season my first ride needs to "clear the pipes" then we're all good.

misterangelo · September 2nd, 2015, 06:18 AM

Quote:

Originally Posted by Ducati999

DO NOT CHANGE THE IDLE SPEED YET. First try running some carb cleaner thru the bike. Since you said the idle "hangs" before it comes down, this indicates either a too lean condition or the slides are sticking or both. Since you are unsure how the bike was maintained and it has only 450ish KM and is nearly 5 years old, I would assume the bike has sat for a time. Run a full tank of fuel thru it with a good amount of Carb cleaner (I like SEAFOAM) any kind should help. You can ride the bike as long as it remains a minor issue and you feel safe just be aware the issue may suddenly (although unlikely) get worse. After a full tank of cleaner and fresh fuel you should see improvement if not then ask about how to find an air leak. You may have to adjust the idle after the fuel and cleaner do their job. I have my bike set to 1100 but I am sure there is a "Factory Recommended" RPM

Good luck

Awesome, sounds great. I'll buy the seafoam from my local store today ( http://reviews.canadiantire.ca/9045/...ws/reviews.htm ), how does it work? lol sorry I'm a new rider. Also, I mentioned doing an oil change. I read many people use the Rotella t6. Is this oil ok to use considering the low mileage the bike has? Also, i was planning on using a fram oil filter since I'm not sure which stores sell a k&n filter.

Any other oil/filter combination suggestions would be great.

Thanks

Bob2010 · September 2nd, 2015, 06:30 AM

Your bike your oil choice. I won't run anything less then Castrol racing 4T full syn oil or mobile racing 4T full syn. A few bucks more but who cares. I get my KN filter off ebay for a few bucks cheaper so I guess that makes up for it ?(I don't quite get the oil debate threads here)

Ducati999 · September 2nd, 2015, 06:36 AM

Quote:

Originally Posted by misterangelo

Awesome, sounds great. I'll buy the seafoam from my local store today ( http://reviews.canadiantire.ca/9045/...ws/reviews.htm ), how does it work? lol sorry I'm a new rider. Also, I mentioned doing an oil change. I read many people use the Rotella t6. Is this oil ok to use considering the low mileage the bike has? Also, i was planning on using a fram oil filter since I'm not sure which stores sell a k&n filter.

Any other oil/filter combination suggestions would be great.

Thanks

Seafoam just gets poured into the gas tank. I usually will run 1/4 of the bottle on a bike with really dirty carbs. I believe they say just a cap full will do the job but I have had good luck with larger ratios.

jkv45 · September 2nd, 2015, 06:49 AM

I agree with trying some fuel system cleaner. Seafoam is fine, but I prefer Chevron Techron Concentrate at 1oz per gal. Run ethanol free 87 octane if possible. Next best is the lowest octane without ethanol.

Because the bike is new to you, there are numerous things that should be checked. Do change the oil and filter - Rotella T6 is fine. There are better oils, but Rotella T6 is more than adequate. Check the air filter, clean and adjust the chain, check the tire pressure and condition, check and possibly change brake fluid, check and possibly change coolant - those are the basics.

Here's a good place to start -

http://faq.ninja250.org/wiki/New_Riders

http://faq.ninja250.org/wiki/Service_Schedule

As far as the idle problems, check that the clamps on the boots between the carb and the engine are tight. Spraying something (WD-40, brake cleaner) on the intake connections with the engine idling will tell you if there is a leak. Any change in RPM will confirm it.

misterangelo · September 2nd, 2015, 08:34 AM

Quote:

Originally Posted by jkv45

I agree with trying some fuel system cleaner. Seafoam is fine, but I prefer Chevron Techron Concentrate at 1oz per gal. Run ethanol free 87 octane if possible. Next best is the lowest octane without ethanol.

Because the bike is new to you, there are numerous things that should be checked. Do change the oil and filter - Rotella T6 is fine. There are better oils, but Rotella T6 is more than adequate. Check the air filter, clean and adjust the chain, check the tire pressure and condition, check and possibly change brake fluid, check and possibly change coolant - those are the basics.

Here's a good place to start -

http://faq.ninja250.org/wiki/New_Riders

http://faq.ninja250.org/wiki/Service_Schedule

As far as the idle problems, check that the clamps on the boots between the carb and the engine are tight. Spraying something (WD-40, brake cleaner) on the intake connections with the engine idling will tell you if there is a leak. Any change in RPM will confirm it.

Awesome, thanks.

Also, once I put the seafoam in the tank. Do I just ride my bike as i normally would?

csmith12 · September 2nd, 2015, 08:45 AM

Quote:

Originally Posted by misterangelo

Awesome, thanks.

Also, once I put the seafoam in the tank. Do I just ride my bike as i normally would?

Ride as normal.

akima · September 2nd, 2015, 08:56 AM

Err... my bike revs up to 6k by itself some mornings and hangs there with the throttle fully closed >.>

misterangelo · September 2nd, 2015, 10:27 AM

Quote:

Originally Posted by akima

Err... my bike revs up to 6k by itself some mornings and hangs there with the throttle fully closed >.>

Cold mornings? What happens when the bike is warm? Any idea what's wrong? Because this is bothering me haha.

akima · September 2nd, 2015, 10:33 AM

We don't really have warm mornings over here

I think I know what's wrong. I think there is rust on the throttle position sensor wiring. At least I hope that that's the case. If that's not the case then it's more likely the TPS is actually faulty... which means I need new throttle bodies to fix it as apparently the TPS is built into the throttle bodies on the Ninja 250R FI >.<

I could be wrong though. I just understand this based on what my usual mechanic has told me.

micoulisninja · September 2nd, 2015, 09:03 PM

Quote:

Originally Posted by akima

We don't really have warm mornings over here

I think I know what's wrong. I think there is rust on the throttle position sensor wiring. At least I hope that that's the case. If that's not the case then it's more likely the TPS is actually faulty... which means I need new throttle bodies to fix it as apparently the TPS is built into the throttle bodies on the Ninja 250R FI >.<

I could be wrong though. I just understand this based on what my usual mechanic has told me.

It really seems like a faulty TPS on your fuel injected 250... it has happened to quite a few in Greece too... happily the TPS is easy to be replaced and can also use a ZX-6R one mod '06 and on, will fit and work just fine....

Ducati999 · September 3rd, 2015, 05:18 AM

Quote:

Originally Posted by micoulisninja

It really seems like a faulty TPS on your fuel injected 250... it has happened to quite a few in Greece too... happily the TPS is easy to be replaced and can also use a ZX-6R one mod '06 and on, will fit and work just fine....

Micoulisninja,
I love your sig line " If noone has tried it I will!"

Excellent!

micoulisninja · September 3rd, 2015, 05:35 AM

Quote:

Originally Posted by Ducati999

Micoulisninja,
I love your sig line " If noone has tried it I will!"

Excellent!

well you see there is a story behind that...
Greece has great minds but somehow people lack willingness to think out of the box, and experiment -mostly because resources, but also special equipment and new technologies are limited- and if there are, they are way too expensive to use, to build or tune/modify anything or the guy who owns it knows nothing about using it properly...

most of the times I have a "crazy" idea and try to make it a "result", so it is "trial and error" for me.
I have been many times justified by insisting on doing something "different", others was just failure, however this mod has kind of become not only part of my life and choices, but part of who I am...

p.s. friends call me "McGyver" after the TV series guy if you know...

September 2nd, 2015, 05:34 AM	#1
misterangelo ninjette.org member Name: Angelo Location: Toronto, ON Join Date: Aug 2015 Motorcycle(s): 2010 Kawasaki Ninja 250R Posts: 10	2010 Ninja 250R RPM question. Hi everyone, I know I'm posting this in the general section. The reason being is I'm assuming someone else with a different bike may have this problem. Now I recently purchased a bike from a lady with 450KM on it. Not sure how well maintained it was but I bought the bike. I bought a 2010 Ninja 250R. Now, when I warm up the bike the idle sits at like 1400 rpm and the rpm hangs and slowly comes down after I give it throttle. I took it out on the road for the first time yesterday and filled it with gas. Drove around for a bit and then I noticed when I was at a red light, my rpms were like 2-3K. Now is this normal? Any suggestions what could be wrong? I still have to do an oil change, planning on doing that this over the long weekend. Any help is greatly appreciated. Thanks!

September 2nd, 2015, 05:35 AM	#2
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	/moved to new-gen tech Could be an air leak, or the bike could need its carbs cleaned of deposits. __________________________________________________ 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)

September 2nd, 2015, 05:54 AM	#4
Bob2010 ninjette.org sage Name: Bob Location: NY Join Date: Jul 2012 Motorcycle(s): 2010 Ninja 250 2009 Ninja 250 Posts: 730	Well if you have very low RPMs on a cold start and didn't use your choke - that would make sense. Once the bike warms up it will idle higher where it is set to idle by the idle knob by your left knee __________________________________________________ 2010 Red Ninja 250 2009 Black Ninja 250 -If you ride like lightning,you're gonna crash like thunder-

September 2nd, 2015, 06:03 AM	#6
Bob2010 ninjette.org sage Name: Bob Location: NY Join Date: Jul 2012 Motorcycle(s): 2010 Ninja 250 2009 Ninja 250 Posts: 730	From what I recall when I asked the same question - was 1,300 to 1,500 I swear some one here said 3,000 but I feel that's too high and I lowered to about 1,500 __________________________________________________ 2010 Red Ninja 250 2009 Black Ninja 250 -If you ride like lightning,you're gonna crash like thunder-

September 2nd, 2015, 06:15 AM	#8
Bob2010 ninjette.org sage Name: Bob Location: NY Join Date: Jul 2012 Motorcycle(s): 2010 Ninja 250 2009 Ninja 250 Posts: 730	Yeah less then 300 miles and he already put fresh gas in it - just ride it until you can crack the throttle and it doesn't bog anymore. Assuming if things were junked up that badly , you probably have bogging issues too when throttle is applied. At least that's always the case for me when the bikes sit all winter. Probably be wise to check your tires for cracks and dry rot. Change the oil Each season my first ride needs to "clear the pipes" then we're all good. __________________________________________________ 2010 Red Ninja 250 2009 Black Ninja 250 -If you ride like lightning,you're gonna crash like thunder-

September 2nd, 2015, 06:08 AM	#7
Ducati999 ninjette.org certified postwhore Name: Ant Location: Wooster Join Date: Dec 2013 Motorcycle(s): Ducati 999 2012 Ninja 250r Ducati748 Yellow finally running 2003 SV650 S (SOLD) Posts: A lot.	DO NOT CHANGE THE IDLE SPEED YET. First try running some carb cleaner thru the bike. Since you said the idle "hangs" before it comes down, this indicates either a too lean condition or the slides are sticking or both. Since you are unsure how the bike was maintained and it has only 450ish KM and is nearly 5 years old, I would assume the bike has sat for a time. Run a full tank of fuel thru it with a good amount of Carb cleaner (I like SEAFOAM) any kind should help. You can ride the bike as long as it remains a minor issue and you feel safe just be aware the issue may suddenly (although unlikely) get worse. After a full tank of cleaner and fresh fuel you should see improvement if not then ask about how to find an air leak. You may have to adjust the idle after the fuel and cleaner do their job. I have my bike set to 1100 but I am sure there is a "Factory Recommended" RPM Good luck

September 2nd, 2015, 06:30 AM	#10
Bob2010 ninjette.org sage Name: Bob Location: NY Join Date: Jul 2012 Motorcycle(s): 2010 Ninja 250 2009 Ninja 250 Posts: 730	Your bike your oil choice. I won't run anything less then Castrol racing 4T full syn oil or mobile racing 4T full syn. A few bucks more but who cares. I get my KN filter off ebay for a few bucks cheaper so I guess that makes up for it ?(I don't quite get the oil debate threads here) __________________________________________________ 2010 Red Ninja 250 2009 Black Ninja 250 -If you ride like lightning,you're gonna crash like thunder-

September 2nd, 2015, 06:49 AM	#12
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	I agree with trying some fuel system cleaner. Seafoam is fine, but I prefer Chevron Techron Concentrate at 1oz per gal. Run ethanol free 87 octane if possible. Next best is the lowest octane without ethanol. Because the bike is new to you, there are numerous things that should be checked. Do change the oil and filter - Rotella T6 is fine. There are better oils, but Rotella T6 is more than adequate. Check the air filter, clean and adjust the chain, check the tire pressure and condition, check and possibly change brake fluid, check and possibly change coolant - those are the basics. Here's a good place to start - http://faq.ninja250.org/wiki/New_Riders http://faq.ninja250.org/wiki/Service_Schedule As far as the idle problems, check that the clamps on the boots between the carb and the engine are tight. Spraying something (WD-40, brake cleaner) on the intake connections with the engine idling will tell you if there is a leak. Any change in RPM will confirm it.

September 2nd, 2015, 08:56 AM	#15
akima Nooblet Name: Akima Location: England Join Date: Jul 2011 Motorcycle(s): 2011 Ninja 250R FI Posts: A lot. Blog Entries: 5 MOTM - Oct '13	Err... my bike revs up to 6k by itself some mornings and hangs there with the throttle fully closed >.> __________________________________________________

September 2nd, 2015, 10:33 AM	#17
akima Nooblet Name: Akima Location: England Join Date: Jul 2011 Motorcycle(s): 2011 Ninja 250R FI Posts: A lot. Blog Entries: 5 MOTM - Oct '13	We don't really have warm mornings over here I think I know what's wrong. I think there is rust on the throttle position sensor wiring. At least I hope that that's the case. If that's not the case then it's more likely the TPS is actually faulty... which means I need new throttle bodies to fix it as apparently the TPS is built into the throttle bodies on the Ninja 250R FI >.< I could be wrong though. I just understand this based on what my usual mechanic has told me. __________________________________________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2010 Ninja 250R - Idle / throttle question	misterangelo	2008 - 2012 Ninja 250R Tech Talk	6	August 30th, 2015 05:29 PM
Carb question: High RPM hesitation	amad1972	1986 - 2007 Ninja 250R Tech Talk	36	August 25th, 2014 09:42 PM
Just cleaned carbs - now stuttering at low RPM, fine at high RPM	Ohio	2008 - 2012 Ninja 250R Tech Talk	20	August 5th, 2014 10:30 PM
RPM Question	Machine1	2008 - 2012 Ninja 250R Tech Talk	8	June 2nd, 2012 07:28 PM
RPM problems on 2010 ninja 250r	Spencer M	2008 - 2012 Ninja 250R Tech Talk	8	June 1st, 2010 04:59 AM