November 27th, 2014, 12:07 AM | #1 |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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08 250r issues
Hello so lately i have been experiencing hard starting issues with my ninja 250r, all of the times it has a hard time starting is when its cold or left sitting for a few hours. On top of this once it does start the idle is extremely weak. even with the choke pulled all the way down and letting it sit with the choke running for a min the idle is still extremely weak and will die really easily when given gas. What can be the cause? My bike is an 08, 33k miles, carbs have NOT been pulled or cleaned (I ride it everyday, 70 miles every day), valve adjustments has not been done yet either. Any other problems that could cause this problem?
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November 27th, 2014, 03:26 AM | #2 |
Down Under
Name: Linkin
Location: Sydney, Australia
Join Date: Jun 2014 Motorcycle(s): Kawasaki ZXR250C Ninja Posts: 296
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When was the last service done, in miles and time? Might be due.
Check the air filter, make sure it's not blocked. You could try some carb cleaner in your next tank of fuel. Try leaving the choke on for 10 seconds or so before starting the bike. Do you give it a bit of throttle when starting? Just a little to get the revs up Last futzed with by Linkin; December 9th, 2014 at 11:06 PM. |
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November 27th, 2014, 09:41 AM | #3 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
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Assuming you checked the simple stuff already...
Battery still good? airbox and filter clean and clear? Then... 33k without a valve check . Hard cold starts but easy warm starts point to valves. It's time, and your way past due! Might as well check and clean those carbs while you got the bike down for maintenance. It's only a few hours work tops.
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Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
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November 27th, 2014, 01:33 PM | #4 |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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Air filter is clean still, not gunked up and dirty. As for the battery reading i did that while i had the tank and seat off to adjust my choke. Oddly enough the batter voltage was at 12.84V which i thought was abnormally high since the battery rating i saw on the label was for 12V and i didnt run the bike prior either. Also i did have the choke on for a few before starting and everytime it just started with the choke off and i give it a few blips i have to be really careful on how slow i blip i cause it hesitates like crazy and if i just outright give it gas itll just die. even when slowly giving it throttle i can hear that thing want to die and stall.
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November 27th, 2014, 01:49 PM | #5 | |
Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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Quote:
Yes, that clearance gets reduced with the usage of the engine and messes the proper timing and breathing, which makes combustion at low rpm's harder to keep. Also drain the carburetor's bowls and adjust the idle rpm's. http://faq.ninja250.org/wiki/Draining_the_carbs http://faq.ninja250.org/wiki/What_is...I_adjust_it%3F If you ride everyday, the jets and internal passages of the carburetor should be clean. Sometimes vacuum hoses get old and develop cracks that allow air intrusion. That also works against a smooth sustainable idle. Check this out: http://www.iwemalpg.com/Vacuum_gauge.htm
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Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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November 29th, 2014, 12:54 AM | #6 |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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how hard is it to do a valve adjustment and clean the carbs or possibly replace the jets inside the carb as well for a person that hasnt done it ever before?
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November 29th, 2014, 10:23 AM | #7 | |
Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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Quote:
I wouldn't do more than one change/service at once, before road testing the machine. The reason is that if something become bad, you will not know what was the last work that induced it.
__________________________________________________
Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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November 29th, 2014, 10:34 AM | #8 |
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
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33k and no vale adjustment. Get that done and clean the carbs if you still have the issue come back and report on it.
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November 29th, 2014, 01:42 PM | #9 |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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year is a '08 ninja and i will do the simpliest one first then. Drain the carbs and if the problem still persists i will clean the carbs then and ill save the valve adjust for last. is that a smart plan on going about things?
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November 29th, 2014, 02:49 PM | #10 | ||
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
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Quote:
from the owner's manual: Quote:
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November 29th, 2014, 03:24 PM | #11 |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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Sh*t nice catch man. I will do that then. Ill just bring it to a shop to get it done since my only day free is sunday. how often should the valves be checked?
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November 29th, 2014, 03:44 PM | #12 |
Track Clown
Name: Chris
Location: Kingman, AZ
Join Date: May 2012 Motorcycle(s): '08 250R, 21 MV F3 800, Kawasaki 400 build Posts: A lot.
MOTM - Sep '15
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recommendation is every 12k miles.
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November 29th, 2014, 03:59 PM | #13 |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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alright ill get on that ASAP. thanks for the help.
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November 29th, 2014, 04:32 PM | #14 |
Fast-Guy wannabe
Name: Jason
Location: Brentwood, Ca
Join Date: Oct 2011 Motorcycle(s): 2009 Ninja250, 2011 RM-Z250, 2004 NSR50, Posts: A lot.
MOTM - Jan '13
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When you check the valves make sure you replace the spark plugs. I adjusted my valves at 12k and have inspected them without needing to adjust then at 20k, 30k, 40k, and 50k. I install new plugs at 12k and by the time I reached 40K it was running a bit weak in the cold at first start up so I figured I'd need to actually make an adjustment to the valves this time around. To my surprise the valves where still fine but the electrode on the spark plugs where burned away from use and the gap was 0.012" over spec. I dropped in new plugs and it fired up and ran nice and clean just like it did 30k miles ago. I'm not saying to replace plugs then if it doesn't work check your valves, you must do both at this point.
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November 30th, 2014, 03:36 AM | #15 | |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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Quote:
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December 9th, 2014, 10:36 PM | #16 |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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Well bad luck. i measured my valve clearances just two days ago and put everything back together. First thing i started it up there was a hose from the top of the valve cover that wasnt plugged in so the bike kept dying at low rpm + gasping for air. So i fixed that, now its leaking coolant and didnt discover it until i made it to my work which is 35 miles away from home. Now i rode it back home hoping i wont run the coolant dry because of the leak and guess what? i made it home but it died on me. I checked the radiator and its bone dry and bike wont start now. What is the cause? do i need an engine rebuild now? i trashed my engine?
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December 10th, 2014, 09:54 AM | #17 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
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You sure the system was completely dry? This bikes can vac lock like crazy with air in the system. There is a drain bolt near the water pump. Take the radiator cap off and pull that bolt. Drain any and all coolant and start over. If you are a cheapskate , you can fill the system with plain tap water while you're testing for major engine damage.
Could you have some damage? Sure, check your sight glass for milky or foamy oil. If you overheated it bad, you just might need a head gasket/oil change and hopefully nothing else. If it's foamy, STOP running the engine and change the oil or you could f-up more of the internals.
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Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
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December 10th, 2014, 11:29 AM | #18 | |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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Quote:
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December 10th, 2014, 11:48 AM | #19 | |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
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Quote:
Start with oil check first, no sense in even turning on the key and going any further until that is ensured. Also, just topping off the radiator will only get you by. You really should bleed any remaining air out of the system. To do this, you will have to get the bike running long enough so the thermostat opens, then blip the throttle a few times. Just leave the cap off and refill as needed but keeping it full throughout this process makes life a bit easier.
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
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December 10th, 2014, 09:27 PM | #20 | |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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Quote:
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December 10th, 2014, 09:41 PM | #21 |
The Corner Whisperer
Name: Chris (aka Reactor)
Location: Northern KY
Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much.
MOTY 2015, MOTM - Nov '12, Nov '13
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Oil check - good
Coolant check - good Pull a plug - what color? Is it wet from coolant or oil or gas?
__________________________________________________
Goal: Shake A Million Hands | Look through the corners | Track Day Prep | Closest track? | The Mid-Ohio School |
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December 11th, 2014, 05:39 PM | #22 | |
Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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Quote:
Could you correct it? If so, did the bike run better before stopping? Did you finally drain the carbs? Do you have an experienced friend that can give you a hand?
__________________________________________________
Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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December 12th, 2014, 11:04 PM | #23 |
The Motorcycle Newb!
Name: Tony
Location: Orange County
Join Date: Apr 2013 Motorcycle(s): 2010 Ninja 250R (Red/SOLD), 2008 Ninja 250R (Black/SOLD), 2005 ZX6R (Black) Posts: 193
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Okay so i think i finally figured out why it was leaking and not running right since i put it together. Turns out when i placed the valve cover back on the gasket didnt sit right and align properly with the valve cover. the gasket is sticking out to the left side of the bike. Im sure that is why coolant was spewing all over the place. Now whats the damage? coolant in my valves?
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