MotoHouston.com MotoHouston.com
Register Members List Member Map Media Calendar Garage Forum Home Mark Forums Read

Go Back   MotoHouston.com > General Discussion > General Discussion (Moto Related)
Forgot info?

Welcome to MotoHouston.com! You are currently viewing our forums as a guest which gives you limited access to the community. By joining our free community you will have access to great discounts from our sponsors, the ability to post topics, communicate privately with other members, respond to polls, upload content, free email, classifieds, and access many other special features. Registration is fast, simple and absolutely free, join our community!

Register Today!

If you have any problems with the registration process or your account login, please contact us.


Like us on Facebook! Regular shirt GIVEAWAYS and more

Advertisement

Reply
Share This Thread: 
Subscribe to this Thread Thread Tools
Old 08-07-2008, 09:02 PM   #1
Los
Gang Member
 
Los's Avatar
 
Join Date: May 2005
Location: Katy\NW
Feedback Rating: (7)
Posts: 17,174

Experience: 10+ years

Bike(s):
'04 Yamaha R6 Edition
'14 Yamaha R6








Send a message via AIM to Los
'07 Ninja 250: Major loss of power

My friend recently had his 250 stolen which was recovered a month later (yesterday). Well upon picking up the bike, it looked cosmetically fine besides the left clipon which was a bit scraped and the rearset being a bit loose. The people who stole it obviously dropped it but it seems to be at a low speed.

The major problem is the bike doesn't seem to have any power whatsoever. Yes its a 250 but the change in power is drastic. The bike starts up and idles fine. But when taking off, it struggles to make it through the rpm range from low all the way to high rpms. One thing I did notice is that the rise in rpms is consistent. There is no hesitation as it rises smoothly. It just takes very long. It almost seems like there is a loss of compression.

Steps that have been taken is, new gas, checked spark plugs and gap. The air filter is clean as well. What other actions do you feel should be taken to troubleshoot the issue? Like I said, the bike was stolen for a little less than a month and about 200 miles were put on it. Any thoughts?
__________________
4v82zk8
Koskesh....RIP Brotha.... 4/22/07
Los is offline   Reply With Quote
Similar Topics
Thread Thread Starter Forum Replies Last Post
I want something light like a ninja 250 but with more power venmichaels General Discussion (Moto Related) 61 07-20-2011 04:07 PM
07 Ninja 250 Fuel guage? fidelitas88 How To's and Q & A's 7 08-15-2008 08:25 AM
Need help getting 07 Ninja 250 w/ 630 miles on it to idle w/o choke... Blue91 General Discussion (Moto Related) 57 08-06-2008 11:35 AM
power loss bigart General Discussion (Moto Related) 8 05-09-2007 01:49 PM
Ninja 250 ride + whoever else 4/7/07 Spanish Fly Events, Meets and Rides 5 04-06-2007 07:03 PM
Advertisement
Old 08-07-2008, 09:12 PM   #2
Old School RR
Senior Member
 
Old School RR's Avatar
 
Join Date: Dec 2007
Location: Belton, TX
Feedback Rating: (0)
Posts: 1,061

Experience: 10+ years

Bike(s):
1999 Honda 900RR....sold
2003 Z1000...currently on the disabled list








Send a message via Yahoo to Old School RR
Insurance should pay for a new one no....unless he bought it back
__________________
OldSchoolRRcopy
Old School RR is offline   Reply With Quote
Old 08-07-2008, 09:13 PM   #3
Los
Gang Member
 
Los's Avatar
 
Join Date: May 2005
Location: Katy\NW
Feedback Rating: (7)
Posts: 17,174

Experience: 10+ years

Bike(s):
'04 Yamaha R6 Edition
'14 Yamaha R6








Send a message via AIM to Los
Liability. Lucky for him it was found.
__________________
4v82zk8
Koskesh....RIP Brotha.... 4/22/07
Los is offline   Reply With Quote
Old 08-07-2008, 09:13 PM   #4
Chris24
Thread Savior
 
Chris24's Avatar
 
Join Date: Oct 2005
Location: West Houston
Feedback Rating: (0)
Posts: 4,635

Experience: 8 years

Bike(s):
1979 Yamaha XS1100 Special









Send a message via AIM to Chris24 Send a message via MSN to Chris24 Send a message via Yahoo to Chris24
hmm ok. heres some random things i can think of...

check the intake manifolds...check both sides of both boots. make sure they are getting good airtight seal. a drop could make one loose and put too much air into the cylinder. also check the exhaust mani and pipes. feel for an exhaust leak? maybe an exhaust leak causing low backpressure and loss of torque?

check the spark plugs again. see what the color is, maybe that will give you a clue to whats going on in the cylinders. who knows maybe one isnt firing.

maybe the clutch? im betting a newbie rider who rides a stolen newbie starter bike and drops it probably rides the clutch. im sure they were literally riding it like it was stolen, they could have been redlining it and dumping the clutch for those awesome wheelies.

idk... all i can think of for the minute
__________________
Brought to you by Carls Jr.!
Chris24 is offline   Reply With Quote
Old 08-07-2008, 09:15 PM   #5
n2racing
Member
 
Join Date: Jun 2008
Feedback Rating: (0)
Posts: 77












Sounds like it was seriously over reved and may have bent some valves. Do a leak down check.
Kevin
CMRA Chief Tech Inspector
n2racing is offline   Reply With Quote
Old 08-07-2008, 09:32 PM   #6
Los
Gang Member
 
Los's Avatar
 
Join Date: May 2005
Location: Katy\NW
Feedback Rating: (7)
Posts: 17,174

Experience: 10+ years

Bike(s):
'04 Yamaha R6 Edition
'14 Yamaha R6








Send a message via AIM to Los
If the valve was leaking wouldn't this create some abnormal noises? The bike sounds fine when riding and at a idle position. Im not saying its not possible but wouldn't there be a slight sound that would lead one to think that there may be a possible issue with the valves? Also does anyone think that re-synching the carbs may make an improvement? The only reason why I dont think it would is because the bike doesn't hesitate while trying to rise in the rpms under load.


thanks for all the input so far everyone.
__________________
4v82zk8
Koskesh....RIP Brotha.... 4/22/07
Los is offline   Reply With Quote
Old 08-07-2008, 09:49 PM   #7
XRCajun
Cool Senior Member
 
XRCajun's Avatar
 
Join Date: Apr 2007
Location: South Side
Feedback Rating: (1)
Posts: 1,189

Experience: 10+ years
Trackdays: 5

Bike(s):
2001 Honda XR650R Track Motard (sold), 2006 Honda 919, 2007 Honda CBR600RR(sold)









Man it really sounds to me like you've got a clogged exhaust. You've said it's reving slowly. A bad clutch would cause it to rev fast and not go anywhere. Intake problems would probably cause it not idle very well.

It's very likely that in dropping it or hitting something the exhaust was bend somewhere and/or is clogged. It really sounds like you have some kind of a restriction by what you've described.
XRCajun is online now   Reply With Quote
Old 08-07-2008, 09:58 PM   #8
Heytalktoryan
Senior Member
 
Heytalktoryan's Avatar
 
Join Date: Jul 2008
Feedback Rating: (1)
Posts: 236












Why the do people steal 250r's?
Honestly, I'd be somewhat happy if mine was stolen.
I could use the money ( they ay you the market value correct? ) to buy a even better bike, lol.
__________________
Ryan J
Heytalktoryan is offline   Reply With Quote
Old 08-07-2008, 10:14 PM   #9
n2racing
Member
 
Join Date: Jun 2008
Feedback Rating: (0)
Posts: 77












Slightly bent valves do not always make noise. Only takes a little bit of damage to keep them from sealing on the seat.
Pax, Kevin
n2racing is offline   Reply With Quote
Old 08-07-2008, 10:20 PM   #10
1fastchevy
Bout Time
 
1fastchevy's Avatar
 
Join Date: May 2008
Location: North
Feedback Rating: (1)
Posts: 1,059

Experience: 10+ years
Trackdays: 10+

Bike(s):
750









How was it recovered?
1fastchevy is offline   Reply With Quote
Old 08-07-2008, 10:35 PM   #11
Los
Gang Member
 
Los's Avatar
 
Join Date: May 2005
Location: Katy\NW
Feedback Rating: (7)
Posts: 17,174

Experience: 10+ years

Bike(s):
'04 Yamaha R6 Edition
'14 Yamaha R6








Send a message via AIM to Los
police found it on the side of the road less than a mile where it was stolen from. Bisonette between wilcrest and dairy ashford.
__________________
4v82zk8
Koskesh....RIP Brotha.... 4/22/07
Los is offline   Reply With Quote
Old 08-07-2008, 11:08 PM   #12
hfa3g11
OG
 
hfa3g11's Avatar
 
Join Date: Apr 2005
Location: Houston
Feedback Rating: (4)
Posts: 2,543

Experience: 10+ years
Trackdays: 10+


2005 Honda CBR600RR Tribal Edition *retired*








Send a message via AIM to hfa3g11
HI LOSEY!!!!! sorry for hi-jacking your thread. carry on. just wanted to say hi. lol
hfa3g11 is offline   Reply With Quote
Old 08-07-2008, 11:09 PM   #13
Los
Gang Member
 
Los's Avatar
 
Join Date: May 2005
Location: Katy\NW
Feedback Rating: (7)
Posts: 17,174

Experience: 10+ years

Bike(s):
'04 Yamaha R6 Edition
'14 Yamaha R6








Send a message via AIM to Los
whats up my nig....
__________________
4v82zk8
Koskesh....RIP Brotha.... 4/22/07
Los is offline   Reply With Quote
Old 08-07-2008, 11:13 PM   #14
Bigmarky
Funny saying goes here
 
Bigmarky's Avatar
 
Join Date: Apr 2008
Location: Houston
Feedback Rating: (0)
Posts: 522

Experience: 10+ years

Bike(s):
non running sv650 :(









further derail
calling any one 'my nig' is utter ignorance
im not black and that word shouldnt be used in any form on a public forum

that being said - sounds like they over-revved it and caused a seal to fail or some kinda leak

might have to take the hit, sell it and buy a real bike - which in the end u'll be happier then fighting an uphill battle if u have no idea wuts really wrong

if u take it to a shop they are gonna charge u out the figuring out whats wrong - but thats just my opinion
Bigmarky is offline   Reply With Quote
Old 08-08-2008, 12:57 AM   #15
CaligoneTx
Forest Gnome Tour Guide
 
CaligoneTx's Avatar
 
Join Date: Sep 2007
Location: Valhalla
Feedback Rating: (1)
Posts: 21,558

Experience: 10+ years

Bike(s):
Triumph 675r
Ducati 748
Hyosungs (250r + 650r)
Honda 900rr
Suzuki Busa1300r (+2 bikes)






Send a message via AIM to CaligoneTx Send a message via Yahoo to CaligoneTx
if you rev it up not in gear does it do the same?

check ur gas; cheap gas, watered down poor combustion.

If the carbs weren't synced I'd expect a rough idle. If there is alot of blow by pulling the hose for the PCV would have alot of pressure/vapor in it.
__________________
triumphsig
CaligoneTx is offline   Reply With Quote
Old 08-08-2008, 01:18 AM   #16
RojerLockless
member of NO MA`AM
 
RojerLockless's Avatar
 
Join Date: Jul 2005
Location: I"M FROM TEXAS, Clear Lake
Feedback Rating: (10)
Posts: 10,903

Experience: 10+ years
Trackdays: 3

Bike(s):
Honda CB919




Member Garage


Quote:
Originally Posted by Heytalktoryan View Post
Why the do people steal 250r's?
Honestly, I'd be somewhat happy if mine was stolen.
I could use the money ( they ay you the market value correct? ) to buy a even better bike, lol.
because there are more ninja 250's on the road then any other bike in the USA.. therefore they can part them out and make $

same reason you steal anything.
__________________
I kissed a girl and I liked it!

RojerLockless@Motohouston.com
BRING BACK GIXXERBILL!!!
CRBsig 2
RojerLockless is offline   Reply With Quote
Old 08-08-2008, 05:28 AM   #17
Orion85
Senior Member
 
Orion85's Avatar
 
Join Date: Feb 2008
Location: Racers Road
Feedback Rating: (0)
Posts: 180

Experience: 2 years

Bike(s):
07 ZX-6R









Quote:
Originally Posted by RojerLockless View Post
because there are more ninja 250's on the road then any other bike in the USA.. therefore they can part them out and make $

same reason you steal anything.
If they where going to part it out the police would not have found it in one piece.
Orion85 is offline   Reply With Quote
Old 08-08-2008, 05:57 AM   #18
bumblebee
Yeah I'm flippin' YOU off
 
bumblebee's Avatar
 
Join Date: Oct 2006
Location: Pearland
Feedback Rating: (3)
Posts: 12,268


Bike(s):
'74 Suzuki GT380
'82 XS650 StreetTracker
'10 Ducati Streetfighter
'83 Yamaha Seca 900






Make sure both cylinders are running. If one exhaust pipe gets hot faster than the other (be careful) you'll know.
If one is not running, then you will be able to further troubleshoot from there.

My guess (just a blind stab since we have so little info) is that something has clogged one of the orifices in one of the carbs (they are tiny on a bike like this) preventing one cylinder from running.
With half the horsepower all the other symptoms fit.
__________________
Asphalt is for racing... dirt is for growing potatoes. - J. Diester
When seconds count... the police are only minutes away.
Grow up and be a productive member of society already.
Bevo- "I lack skillz"
bumblebee is online now   Reply With Quote
Old 08-08-2008, 06:24 AM   #19
ScooterTrash
ConroePowderCoating.com
 
ScooterTrash's Avatar
 
Join Date: May 2005
Location: Cut n Shoot
Feedback Rating: (3)
Posts: 17,239


Bike(s):
lots of em






Quote:
Originally Posted by Los View Post
My friend recently had his 250 stolen which was recovered a month later (yesterday). Well upon picking up the bike, it looked cosmetically fine besides the left clipon which was a bit scraped and the rearset being a bit loose. The people who stole it obviously dropped it but it seems to be at a low speed.

The major problem is the bike doesn't seem to have any power whatsoever. Yes its a 250 but the change in power is drastic. The bike starts up and idles fine. But when taking off, it struggles to make it through the rpm range from low all the way to high rpms. One thing I did notice is that the rise in rpms is consistent. There is no hesitation as it rises smoothly. It just takes very long. It almost seems like there is a loss of compression.

Steps that have been taken is, new gas, checked spark plugs and gap. The air filter is clean as well. What other actions do you feel should be taken to troubleshoot the issue? Like I said, the bike was stolen for a little less than a month and about 200 miles were put on it. Any thoughts?
motor is slap wore out i'll bet, have you done a compression check?
__________________
[COLOR="Lime"][B]Highway HorrorS c.c.[/B][/COLOR]



[QUOTE=Mr.D;2764337]
I respect scootertrash because well... He's like the Jesus of building and fixing .
[/QUOTE]
ScooterTrash is offline   Reply With Quote
Old 08-08-2008, 08:53 AM   #20
Blue91
10.13.07
 
Blue91's Avatar
 
Join Date: Feb 2007
Location: NW Houston
Feedback Rating: (3)
Posts: 2,217

Experience: 7 years

Bike(s):
2010 White R6
2003 Silver R6 (sold)



Member Garage





Send a message via Yahoo to Blue91
Check throttle cable adjustment.
__________________
gixxerbill - MotoHouston.com's Lifetime Intolerance Award Winner

Blue91 is offline   Reply With Quote
Reply


Thread Tools

Advertisement


All times are GMT -5. The time now is 11:02 PM.


MotoHouston.com is not responsible for the content posted by users.
Privacy Policy