ninjette.org

Go Back   ninjette.org > 2008 - 2012 Ninja 250R > 2008 - 2012 Ninja 250R Tech Talk

Reply
 
Thread Tools
Old September 1st, 2021, 02:28 PM   #1
ruhil
ninjette.org member
 
Name: Anirudh
Location: ohio
Join Date: Jun 2010

Motorcycle(s): Ninja 250R (2009), Special Edition

Posts: 18
Exclamation 08 Ninja 250R dies if throttle closed, will not idle

Hello Maestros.

Greetings from a returning noob who is pretty sure you know the answer to my moto woes ...

1. Bike sat for a few years without being ridden at all.
2. Got a new battery, charged it up, hooked it up, and off we go to start.
3. Runs but dies without choke on. Idles in the 1300\1400 range, good with me.
4. Removed and cleaned the carbs, put them back on the bike, and added new fuel.
5. Now bike starts without choke, but I have to open the throttle to get it going. If I release the throttle, bike dies. Tried adjusting the idle but has not helped.

My inexperienced guesswork leads me to suspect that either

(a) I messed up with the idle cable when I cleaned the carbs but I cannot see how that would have happened since I did not mess around with the idle screw at all. Jets and bowls, yes, but not the idle screw. OR
(b) When I reconnected the throttle cables I somehow set them up to be at "zero" throttle and so unless I open it up even a fraction, the engine dies? Not sure if this even makes sense mechanically but what do I know!

I have the manual and the usual array of 50+ forum messages and youtube DIY videos bookmarked but if any of you gods and goddesses have clues as to what might be going on and how I could get at fixing it, may the pantheon of gods from the House of Kawasaki bless you to eternity!

Gracias

Ani
ruhil is offline   Reply With Quote




Old September 1st, 2021, 02:52 PM   #2
Triple Jim
Guy Who Enjoys Riding
 
Triple Jim's Avatar
 
Name: Jim
Location: North Central North Carolina
Join Date: Jul 2016

Motorcycle(s): Ninja 250

Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
Quote:
Originally Posted by ruhil View Post
5. Now bike starts without choke, but I have to open the throttle to get it going. If I release the throttle, bike dies. Tried adjusting the idle but has not helped.
My guess is that something is letting too much fuel through at idle, so it's running so rich it stalls. The starting without using the enricher is why I say this. Possibly the float valves are leaking or the float level is wrong, or the floats aren't moving freely, etc..

If the idle speed setting is too low and causing this, just adjust the idle speed with the black plastic knob, assuming newgens have them.

@ducatiman will probably have more and better ideas.
Triple Jim is offline   Reply With Quote


Old September 1st, 2021, 03:31 PM   #3
ducatiman
ninjette.org certified postwhore
 
ducatiman's Avatar
 
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
@ruhil posted "Runs but dies without choke on. Idles in the 1300\1400 range, good with me."

Before commenting....some conflicting input here...def needs some clarification...one or the other....which is it?
__________________________________________________
Gordon
Custom Carb Service

www.customcarbservices.com
ducatiman is offline   Reply With Quote


Old September 1st, 2021, 03:34 PM   #4
ruhil
ninjette.org member
 
Name: Anirudh
Location: ohio
Join Date: Jun 2010

Motorcycle(s): Ninja 250R (2009), Special Edition

Posts: 18
Sorry for the confusion @ducatiman ...

Post carb cleaning it starts up without any choke so long as I open the throttle while hitting the starter button. The minute I release the throttle fully, the engine stops running.

Usually releasing the throttle would have resulted in the engine idling at whatever idle speed had been set. Now that is not the case ... throttle has to be held open to keep engine going.
ruhil is offline   Reply With Quote


Old September 1st, 2021, 03:34 PM   #5
Triple Jim
Guy Who Enjoys Riding
 
Triple Jim's Avatar
 
Name: Jim
Location: North Central North Carolina
Join Date: Jul 2016

Motorcycle(s): Ninja 250

Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
Quote:
Originally Posted by ducatiman View Post
@ruhil posted "Runs but dies without choke on. Idles in the 1300\1400 range, good with me."

Before commenting....some conflicting input here...def needs some clarification...one or the other....which is it?
As I understand it, that was before he cleaned the carbs and got his current symptoms.
Triple Jim is offline   Reply With Quote


Old September 1st, 2021, 03:50 PM   #6
ducatiman
ninjette.org certified postwhore
 
ducatiman's Avatar
 
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
did you upset, remove, readjust the pilot *screws* within your clean efforts?

Kneejerk reaction....readjust the idle speed screw inwards.
__________________________________________________
Gordon
Custom Carb Service

www.customcarbservices.com
ducatiman is offline   Reply With Quote


Old September 1st, 2021, 03:52 PM   #7
ruhil
ninjette.org member
 
Name: Anirudh
Location: ohio
Join Date: Jun 2010

Motorcycle(s): Ninja 250R (2009), Special Edition

Posts: 18
I did clean the pilot jet but am not quite sure what you mean by "adjust" so pardon my ignorance there @ducatiman. I will look up that term.

I'll fiddle with the idle crew and see what results. Thank you for that suggestion!
ruhil is offline   Reply With Quote


Old September 1st, 2021, 04:02 PM   #8
ducatiman
ninjette.org certified postwhore
 
ducatiman's Avatar
 
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
subject was pilot *screws*....evidently you did NOT remove. As a result, your carbs are far from properly cleaned. The 13 year old orings will require replacement, as will bowl gaskets.
__________________________________________________
Gordon
Custom Carb Service

www.customcarbservices.com
ducatiman is offline   Reply With Quote


Old September 1st, 2021, 04:10 PM   #9
ruhil
ninjette.org member
 
Name: Anirudh
Location: ohio
Join Date: Jun 2010

Motorcycle(s): Ninja 250R (2009), Special Edition

Posts: 18
Thank you! I am writing via your website to see if you have any bandwidth to take on this carb

Fingers crossed
ruhil is offline   Reply With Quote


Old September 1st, 2021, 04:13 PM   #10
ducatiman
ninjette.org certified postwhore
 
ducatiman's Avatar
 
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
not bloviating, but yes, of course I can. All parts needed are in stock. I'll shoot you a PM. I can be reached at gordon@customcarbservices.com anytime.
__________________________________________________
Gordon
Custom Carb Service

www.customcarbservices.com
ducatiman is offline   Reply With Quote


Old September 1st, 2021, 04:22 PM   #11
ruhil
ninjette.org member
 
Name: Anirudh
Location: ohio
Join Date: Jun 2010

Motorcycle(s): Ninja 250R (2009), Special Edition

Posts: 18
Bless you
ruhil is offline   Reply With Quote


Old September 2nd, 2021, 06:48 AM   #12
jkv45
Rev Limiter
 
jkv45's Avatar
 
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
Quote:
Originally Posted by ruhil View Post
Sorry for the confusion @ducatiman ...

Post carb cleaning it starts up without any choke so long as I open the throttle while hitting the starter button. The minute I release the throttle fully, the engine stops running.

Usually releasing the throttle would have resulted in the engine idling at whatever idle speed had been set. Now that is not the case ... throttle has to be held open to keep engine going.
Something did not get assembled correctly in the carbs.

Are the "collars" protruding up in the center of the venturi? They will fall out as you disassemble the carb, and occasionally get misplaced.

Collars - https://faq.ninja250.org/images/e/eb/Jim_carb_2.jpg

Seen here, below the slides. Needles drop into them - https://faq.ninja250.org/images/9/91/Carbs.jpg
jkv45 is offline   Reply With Quote


1 out of 1 members found this post helpful.
Old September 2nd, 2021, 09:43 AM   #13
ruhil
ninjette.org member
 
Name: Anirudh
Location: ohio
Join Date: Jun 2010

Motorcycle(s): Ninja 250R (2009), Special Edition

Posts: 18
Thanks @jkv45
ruhil is offline   Reply With Quote


Old September 2nd, 2021, 10:33 AM   #14
DannoXYZ
ninjette.org certified postwhore
 
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T EX250E EX250F Ninja250R-street CBR250R-MC19 CBR250RR-MC22 NSR350R VF500 CBR600RR VFR750

Posts: A lot.
MOTY - 2018, MOTM - Nov '17
https://faq.ninja250.org/images/e/eb/Jim_carb_2.jpg


Also note that those collars can face 2 different ways. Look inside them and you'll see one end has tapered hole. This tapered end should face away from main-jet and towards carb-venturi and needle.
DannoXYZ is offline   Reply With Quote


Old September 2nd, 2021, 10:51 AM   #15
ruhil
ninjette.org member
 
Name: Anirudh
Location: ohio
Join Date: Jun 2010

Motorcycle(s): Ninja 250R (2009), Special Edition

Posts: 18
Gracias @DannoXYZ.
ruhil is offline   Reply With Quote


Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Hanging idle and dies with throttle? gitter 2008 - 2012 Ninja 250R Tech Talk 30 November 9th, 2017 08:32 AM
2010 Ninja 250R - Idle / throttle question misterangelo 2008 - 2012 Ninja 250R Tech Talk 6 August 30th, 2015 05:29 PM
6000 RPM Idle Dies with Throttle garman 1986 - 2007 Ninja 250R Tech Talk 3 August 9th, 2014 01:29 PM
kawasaki ninja 250r dies after pull throttle fight1981 New Members 9 June 28th, 2014 08:15 AM
Sluggish rev, erratic idle, dies with throttle Fappy 2008 - 2012 Ninja 250R Tech Talk 12 October 8th, 2012 06:20 AM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


Motorcycle Safety Foundation

All times are GMT -7. The time now is 03:21 AM.


remote server monitor
Powered by vBulletin®
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Except where otherwise noted, all site contents are Copyright 2021 ninjette.org, All rights reserved.