ninjette.org

Go Back   ninjette.org > 1986 - 2007 Ninja 250R > 1986 - 2007 Ninja 250R Tech Talk

Reply
 
Thread Tools
Old October 6th, 2022, 03:38 PM   #1
Fwathne
ninjette.org newbie
 
Name: Finn
Location: Knoxville
Join Date: Oct 2022

Motorcycle(s): 2005 Kawasaki Ninja 250r

Posts: 2
HELP 2005 ex250 bogging intermittently

Hey guys.
I bought an 05 ninja 250 last fall and have spent the past year fixing her up and getting her road worthy. I’ve been through most everything on the bike: brakes, battery, spark plugs, air filter, de rusting the gas tank, new fuel lines, new fuel petcock, cleaned the carb, got a rebuild kit and even drilled out the fuel mixture screw. After everything, she was finally running amazing, and I mean amazing. Fast forward to now, around 4 weeks after finally getting her running well, I’ve run into a problem that I have no idea how to attack.

The problem first occurred right after I took her up to around 70-80 on the highway, I felt a lil bog in the throttle and sure enough it bogged more and more until I couldn’t even ride it so I pulled over and it died. I checked the gas tank to see if it would ‘woosh’ (indication of vacuum issues), but it didn’t. I waited a couple minutes and turned her back on and she ran perfectly fine again. The next day when I started her up, everything was dandy and she ran great until I went up a super steep hill and had to give it a hefty amount of throttle at low rpms, and she bogged again. Same thing happened, she wouldn’t clear her throat and the bike died, only to start right back up again perfectly fine 5 minutes later. The problems have continued to happen like that since then, especially when I go highway speeds, and I have no idea what could be causing this. Like I said, I just cleaned and rebuilt the carbs about 4 weeks ago so they shouldn’t be dirty whatsoever.

Any insight into why my bike is doing this would be appreciated.

***edit*** the bog typically only happens below 7k rpm, and most times if I can get it above 7 it will rev up normally, only to bog again once the rpm drop back down. A couple of times, however, it bogs even at high rpm.
Fwathne is offline   Reply With Quote




Old October 6th, 2022, 04:02 PM   #2
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
Sounds like a restriction in the fuel system to me.

Petcock screens in the tank, petcock, filter at the inlet of the carbs, are a few places where there could be debris restricting flow.

When it stops, you could open a floatbowl drain to see if only minimal fuel comes out. That would confirm a restiction.

The filter at the carb is inside the inlet, and is easy missed if you don't know it's there.

Inline filter - https://faq.ninja250.org/wiki/File:Fuel_Filter_4.JPG
jkv45 is offline   Reply With Quote


Old October 6th, 2022, 07:21 PM   #3
Fwathne
ninjette.org newbie
 
Name: Finn
Location: Knoxville
Join Date: Oct 2022

Motorcycle(s): 2005 Kawasaki Ninja 250r

Posts: 2
@jkv45 thanks for the insight. When you say inside the inlet, you mean inside of the carb itself right? honestly did not know there was such a thing. I have an inline filter on the bike currently I thought it was just that and the filter at the petcock.
Fwathne is offline   Reply With Quote


Old October 6th, 2022, 07:23 PM   #4
DannoXYZ
ninjette.org certified postwhore
 
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011

Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C

Posts: A lot.
MOTY - 2018, MOTM - Nov '17
No, filter is inside fuel-hose between petcock and carbs. A lot of times, it gets inserted backwards, and fuel-flow wads it up into ball that restricts flow

https://www.ninjette.org/forums/showthread.php?t=381572
https://www.ninjette.org/forums/showthread.php?t=367585
DannoXYZ is offline   Reply With Quote


Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
intermittently noisy cam chain sorrows birdhead birdhead 1986 - 2007 Ninja 250R Tech Talk 8 January 20th, 2021 04:26 PM
Tach intermittently works. NinjaBraap 2008 - 2012 Ninja 250R Tech Talk 9 July 9th, 2019 08:16 PM
engine bogging down az3200 1986 - 2007 Ninja 250R Tech Talk 13 August 7th, 2013 01:22 PM
Still bogging down, what should I try next? 00v_Lucky 2008 - 2012 Ninja 250R Tech Talk 3 July 12th, 2010 04:53 PM
bogging down, help please FlamingYellowInsanity 1986 - 2007 Ninja 250R Tech Talk 12 April 17th, 2009 11:11 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 03:30 AM.


Website uptime monitoring Host-tracker.com
Powered by vBulletin®
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Except where otherwise noted, all site contents are © Copyright 2022 ninjette.org, All rights reserved.