September 24th, 2022, 09:35 AM | #1 |
ninjette.org newbie
Name: paul
Location: france
Join Date: Sep 2022 Motorcycle(s): ninja 250 2011 Posts: 4
|
broken Cam Chain tensioner ?
Hello,
my 2011 ninja 250 had a clicky noise in the engine, comparing with some videos i guessed the problem was a loose cam chain. So i started taking out the cam chain tensioner to check it, then i took out the middle bolt (with a bit of force) and the thread was broken. (as in the picture) I don't know if i broke it when i took out the bolt or if it was already damaged. I wonder if this could be the reason why the cam chain is loose? Other than that the CCT seems to work properly so i don't think it is le cause of my problem. What do you think ? |
|
September 26th, 2022, 01:20 PM | #2 |
CPT Falcon
Name: J.Emmett Turner
Location: Newnan, GA
Join Date: Apr 2009 Motorcycle(s): '08 CP Blue EX250J, '97 unpainted EX250F, 2nd '97 unpainted EX250F (no engine), '07 black EX250F Posts: A lot.
|
I had a clicky noise that would go away when I reset the tensioner (retract and release the tensioner bolt) but it would come back. I replaced it but damaged the threads for the cap bolt when tightening. I used some high-temp RTV sealant to glue a small coin over it.
Yours is damaged in a different way. The aluminum threads came out cleanly when I tightened mine too much where yours seems to have cracked somehow… perhaps when someone tried to insert a screwdriver to retract the tensioner bolt. |
|
September 27th, 2022, 08:15 AM | #3 |
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
|
new-gen CCT tends to be more troublefree than pre-gen.
Not sure what happened with yours. I would replace with new one. Also measure cam-chain for wear. |
|
September 28th, 2022, 10:08 AM | #4 |
ninjette.org newbie
Name: paul
Location: france
Join Date: Sep 2022 Motorcycle(s): ninja 250 2011 Posts: 4
|
thank you
|
|
September 28th, 2022, 10:18 AM | #5 |
ninjette.org newbie
Name: paul
Location: france
Join Date: Sep 2022 Motorcycle(s): ninja 250 2011 Posts: 4
|
CZroe did the new tensioner solved the clicky noise ?
|
|
September 28th, 2022, 03:22 PM | #6 |
CPT Falcon
Name: J.Emmett Turner
Location: Newnan, GA
Join Date: Apr 2009 Motorcycle(s): '08 CP Blue EX250J, '97 unpainted EX250F, 2nd '97 unpainted EX250F (no engine), '07 black EX250F Posts: A lot.
|
I can’t say for sure. It was not new since I salvaged it from a parts engine and I parked the bike ever since. The bike has more serious issues now, like a rusted fuel tank, and fuel that drained into the oil.
I stopped hearing it at idle but resetting the old one would also accomplish this until I went for a ride. |
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Cam chain tensioner | ninjajoey | 1986 - 2007 Ninja 250R Tech Talk | 19 | April 11th, 2017 03:55 PM |
Old Cam Chain Tensioner | akima | 2008 - 2012 Ninja 250R Tech Talk | 0 | February 1st, 2017 06:41 AM |
cam chain tensioner question | bob706 | 2008 - 2012 Ninja 250R Tech Talk | 16 | June 21st, 2016 12:09 PM |
Manual cam chain tensioner. | Monkeytofu | 1986 - 2007 Ninja 250R Tech Talk | 10 | December 23rd, 2013 05:58 PM |
cam chain tensioner | kittyslasher | 2008 - 2012 Ninja 250R Tech Talk | 2 | June 16th, 2013 09:17 AM |
|
|