October 22nd, 2015, 09:55 PM | #1 |
Motorbike Obsessed
Name: Me
Location: SoCal
Join Date: May 2015 Motorcycle(s): 2004 Kawasaki EX250, 2004 Yamaha FZ1, 2006 Honda CRF 450 Flat Track Race Bike Posts: 133
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Current owner - hopeful racer
Hello all. After a buddy's misfortune and some craigslist tomfoolery I have become the proud owner of a recalcitrant 2004 Ninjette. I am working on a hanging throttle condition while trying to prep the bike for racing at Chuckwalla this season. I have been a lurker for a while to help with troubleshooting the problem so thanks for all of the information so far.
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October 22nd, 2015, 10:10 PM | #2 |
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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AchyGrappler! Glad you found us...
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October 22nd, 2015, 10:18 PM | #3 |
ChocolateMilk Addict
Name: Maurice
Location: McDonough
Join Date: Mar 2015 Motorcycle(s): '05 EX-250 "Kallie" 85 KLT 110 ATC "Murdock" Posts: 329
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Welcome!!
Hanging throttle eh? dirty carbs, pull em and clean em. @ducatiman does some good work with those things, shoot him a pm, and don't be afraid to take them out, its realllllly easy, its something about your bike you should get to know.
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< ATGATT > Sweat you can wipe off, Road rash you can't. Burn Rubber, not your Soul. |
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October 23rd, 2015, 06:27 AM | #4 |
RIP Alex
Name: Cuong
Location: Houston, TX
Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot.
Blog Entries: 2
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You must flesh out this misfortune of your buddy's and tomfoolerishness.
Hanging throttle-- Bike was dropped--throttletube grip is rubbing against the bar end or bar is bent under the throttle tube and now allowing the throttle to close back in snappy fashion. Bike running lean can cause the throttle to hang. Also make sure your idle is set right as well.
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HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days |
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October 23rd, 2015, 07:48 AM | #5 |
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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Welcome!
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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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October 23rd, 2015, 08:14 AM | #6 |
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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mmm another ninjette at chuckwalla!
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October 23rd, 2015, 11:38 AM | #7 |
n00b with the b00bs
Name: Jen
Location: Southern California
Join Date: Jan 2013 Motorcycle(s): 2007 EX250, 2008 EX250, 2001 ZR-7S, 2010 ZX-6R Posts: 470
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Where in SoCal are you? I'm in Torrance!
You'll want to do the 17inch wheel conversion. I'll fight you for a front end. But I'm also willing to help you get the bike sorted if you need it. Welcome to the forums! |
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October 23rd, 2015, 12:54 PM | #8 |
Motorbike Obsessed
Name: Me
Location: SoCal
Join Date: May 2015 Motorcycle(s): 2004 Kawasaki EX250, 2004 Yamaha FZ1, 2006 Honda CRF 450 Flat Track Race Bike Posts: 133
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I'm in Oxnard, but I head to Torrance a couple times a year to hit up the Japanese markets. Right now I'm just getting the basics set up while trying to fix the hanging throttle.
As for that, I have done the following: 1) Replaced the spark plugs, carb holders, air box boots 2) disassembled the carbs and ultrasonically cleaned the small parts, cleaned the bodies in a homemade parts washer, complete blow out with a compressor 3) adjusted the valves 4) made numerous tests of mix screw adjustments 1/2 turn at a time Still hangs. I want to replace all of the hoses on the carbs, but got two screws that won't free up so that I can split the bank. Kind of stuck on that for now. I really need to fix this issue before continuing on with the race bike preps.
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My race Ninja build and more motorcycle content. My Motorbike Obsessions |
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October 23rd, 2015, 01:09 PM | #9 | |
ninjette.org certified postwhore
Name: Whodat
Location: Ware Is.,MA
Join Date: Jan 2009 Motorcycle(s): I pass the wind! Posts: A lot.
MOTM - Mar '13, Jun '14
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Quote:
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If everything seems under control; you're just not going fast enough! |
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October 23rd, 2015, 01:55 PM | #10 | |
n00b with the b00bs
Name: Jen
Location: Southern California
Join Date: Jan 2013 Motorcycle(s): 2007 EX250, 2008 EX250, 2001 ZR-7S, 2010 ZX-6R Posts: 470
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Quote:
There's nothing splitting the bank will do to help the throttle hanging, so don't put a lot of effort into that. |
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October 23rd, 2015, 03:17 PM | #11 |
Motorbike Obsessed
Name: Me
Location: SoCal
Join Date: May 2015 Motorcycle(s): 2004 Kawasaki EX250, 2004 Yamaha FZ1, 2006 Honda CRF 450 Flat Track Race Bike Posts: 133
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I'm looking forward to the fun (and expense and danger and excitement and reward and all of it) with great expectation.
Yep, plugs are out and I've been doing test and adjust as I have replaced parts always resetting back to 2.5 turns out to start the next series of tests.
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My race Ninja build and more motorcycle content. My Motorbike Obsessions |
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October 23rd, 2015, 04:08 PM | #12 |
n00b with the b00bs
Name: Jen
Location: Southern California
Join Date: Jan 2013 Motorcycle(s): 2007 EX250, 2008 EX250, 2001 ZR-7S, 2010 ZX-6R Posts: 470
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Ok, just checking you didn't ultrasonically clean the carb bodies with the o-ring in the idle circuit.
It sounds like the spring is bound on top of your diaphragm. If you leave the carbs together and blow air in the crescent shaped section of the air intake, does the slide move up and down freely? |
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October 23rd, 2015, 05:23 PM | #13 |
Motorbike Obsessed
Name: Me
Location: SoCal
Join Date: May 2015 Motorcycle(s): 2004 Kawasaki EX250, 2004 Yamaha FZ1, 2006 Honda CRF 450 Flat Track Race Bike Posts: 133
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I did the opposite. I put a shop vac on the inlet side and worked the butterfly to verify that the slides move and they did.
The only reason I'm going to try to pull the bank apart is to replace the hoses and check for something I can't see.
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My race Ninja build and more motorcycle content. My Motorbike Obsessions |
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October 26th, 2015, 12:54 PM | #14 |
ninjette.org certified postwhore
Name: Rick
Location: Alexandria, Louisiana
Join Date: Jan 2009 Motorcycle(s): 05 Blue Ninja 250 Posts: Too much.
MOTY - 2017, MOTM - Jan '19, Oct '16, May '14
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Hello and welcome
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October 26th, 2015, 02:38 PM | #15 |
sammich maker
Name: snot
Location: West Ohio - in the kitchen
Join Date: Feb 2012 Motorcycle(s): 2013 white 300, 09 KLX 250 SF, 09 thunder blue 250(traded) Posts: A lot.
MOTM - Apr '15
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welcome
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