ninjette.org

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

Reply
 
Thread Tools
Old January 1st, 2024, 02:00 PM   #1
Exponent
ninjette.org member
 
Name: John
Location: Chicago
Join Date: Oct 2023

Motorcycle(s): Honda CB550, 04 Ninja 250

Posts: 19
Engine knock?

Check this video, sound is about 10 seconds in. It only happens at low/lugging rpm. Is it knock or just pinging?

https://youtu.be/FlSduxKclqo?si=AAhGfD1rRPzgFyTk
__________________________________________________
Don't be hasty
Exponent is offline   Reply With Quote




Old January 1st, 2024, 03:50 PM   #2
Triple Jim
Guy Who Enjoys Riding
 
Triple Jim's Avatar
 
Name: Jim
Location: North Carolina
Join Date: Jul 2016

Motorcycle(s): Ninja 250

Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
Is it any different with the clutch lever pulled in, vs. let out?
Triple Jim is offline   Reply With Quote


Old January 1st, 2024, 03:55 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
i'd suggest an immediate valve clearance check, assuring they are not tight, followed by a carb synch

See how it responds and take further tuning action if results do not improve
__________________________________________________
gordon@customcarbservices.com
Custom Carb Service
www.customcarbservices.com
ducatiman is offline   Reply With Quote


Old January 1st, 2024, 04:25 PM   #4
Exponent
ninjette.org member
 
Name: John
Location: Chicago
Join Date: Oct 2023

Motorcycle(s): Honda CB550, 04 Ninja 250

Posts: 19
Quote:
Originally Posted by Triple Jim View Post
Is it any different with the clutch lever pulled in, vs. let out?
Not that I noticed, once the bike is warm the sound is gone from the idle
__________________________________________________
Don't be hasty
Exponent is offline   Reply With Quote


Old January 1st, 2024, 07:21 PM   #5
Triple Jim
Guy Who Enjoys Riding
 
Triple Jim's Avatar
 
Name: Jim
Location: North Carolina
Join Date: Jul 2016

Motorcycle(s): Ninja 250

Posts: A lot.
MOTM - Oct '18, Aug '17, Aug '16
It's really hard to tell from the video, but I'd guess it's cam chain noise or maybe primary gear or clutch slop. It's not pinging. I've heard a similar noise from mine at times, but I can't tell the relative sound level. Since it goes away when the engine is hot, it's probably nothing like worn out main bearings.
Triple Jim is offline   Reply With Quote


Old January 2nd, 2024, 03:42 PM   #6
Mohawk
ninjette.org guru
 
Mohawk's Avatar
 
Name: Chris
Location: Bristol, UK
Join Date: Feb 2016

Motorcycle(s): ZZR250, VFR800

Posts: 475
That knocking is the knackered clutch plastic bushings. I know it well if you search on here you should find a post from me from a few years ago, where I replaced my clutch with one from a 2008-2012 250R which uses the more normal spring back lash clutch dampers.

The plastic bushes lose shape then go hard then disintegrate & you are left with that knocking because the clutch now has no back lash dampening. You can ride the bike like that if you can live with the noise, but best to get it fixed.
Mohawk is offline   Reply With Quote


Old January 6th, 2024, 04:17 PM   #7
Exponent
ninjette.org member
 
Name: John
Location: Chicago
Join Date: Oct 2023

Motorcycle(s): Honda CB550, 04 Ninja 250

Posts: 19
Update its defintely the clutch, listened to it while the engine was warming up (begrudgingly) and pulled the lever and listened. The knock sound fades with lever in.
Proceeded to adjust the clutch arm at the basket and the sound has gone but, now the bike dies when the clutch engages with lever out and does not move.

Any ideas?
__________________________________________________
Don't be hasty
Exponent is offline   Reply With Quote


Old January 6th, 2024, 04:35 PM   #8
Mohawk
ninjette.org guru
 
Mohawk's Avatar
 
Name: Chris
Location: Bristol, UK
Join Date: Feb 2016

Motorcycle(s): ZZR250, VFR800

Posts: 475
You can't adjust it out. It's not an adjustable thing, it's a design thing, as in poor/cheap pic one or both.
Mohawk is offline   Reply With Quote


Old January 6th, 2024, 04:39 PM   #9
Exponent
ninjette.org member
 
Name: John
Location: Chicago
Join Date: Oct 2023

Motorcycle(s): Honda CB550, 04 Ninja 250

Posts: 19
Quote:
Originally Posted by Mohawk View Post
You can't adjust it out. It's not an adjustable thing, it's a design thing, as in poor/cheap pic one or both.
Well I did something, ugh
__________________________________________________
Don't be hasty
Exponent is offline   Reply With Quote


Old January 6th, 2024, 06:23 PM   #10
Exponent
ninjette.org member
 
Name: John
Location: Chicago
Join Date: Oct 2023

Motorcycle(s): Honda CB550, 04 Ninja 250

Posts: 19
Quote:
Originally Posted by Exponent View Post
Well I did something, ugh
might have just been kickstand sensor
__________________________________________________
Don't be hasty
Exponent is offline   Reply With Quote


Old January 8th, 2024, 08:59 PM   #11
GreyowlVII
ninjette.org newbie
 
GreyowlVII's Avatar
 
Name: Eli
Location: Sacramento
Join Date: Oct 2020

Motorcycle(s): 06' EX250

Posts: 7
Just got this post in my newsletter and this sounds exactly the same as my 06 that recently started doing the same. Definitely going to investigate my clutch as well. Might save me the price of a new engine
GreyowlVII is offline   Reply With Quote


Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Rod knock Tsurber 1986 - 2007 Ninja 250R Tech Talk 7 June 18th, 2020 11:13 PM
2008 ninja 250R engine knock Sbr450 2008 - 2012 Ninja 250R Tech Talk 2 February 14th, 2020 07:45 AM
engine knock? Josh_kcco 1986 - 2007 Ninja 250R Tech Talk 5 August 20th, 2014 10:57 AM
2008 Engine knock at startup rmacgillis 2008 - 2012 Ninja 250R Tech Talk 1 March 13th, 2012 08:20 PM


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 12:19 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.