rattling K12S - K-Bikes.com - Excellence in Motion
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post #1 of 2 (permalink) Old Sep 15th, 2017, 4:24 am Thread Starter
Join Date: Sep 2017
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rattling K12S

I've a 2008 K12S with about 38K that I bought from a dealer when it was on 21K miles.
Back then there was a noise on start up and the dealer upgraded the cam chain tensioner and the noise quit.
17K miles later I can hear similar rattling from the same side of the engine, but this time it appears when the engine is HOT.
on cold start and even the engine is warm the sound of the engine is normal but when in traffic and it heats up the rattling appears
Any experience with this problem?
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post #2 of 2 (permalink) Old Jan 8th, 2018, 11:31 pm
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Join Date: Sep 2008
Location: Auckland, , New Zealand
Posts: 12
I ignored the 5W50 oil recommended by the service manual and since i use 15W50 oil the cam chain rattle is no more thanks to the higher viscosity oil .
I installed myself the upgraded tensioner in my bike and helps a lot.
Did they check the cam chain guides too when they installed the tensioner?
Try the trick with the thicker oil.
If the noise does not go away tou can order a manual chain tensioner from Socal Motowerks.



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