By: Anonymous: Jakrapad ()  Saturday, 09 January 2016 @ 06:51 PM ICT (Read 816 times)  

Dear sir.

From THAILAND please follow this case. my grandchild buy Honda CBR300R now run to 4000 Km. have problem about valve noise and engine oil disappear.

He repeatedly go and claim at Honda service center at Chiang Mai. The problem it still same. and now when them go to service center at Chiang Mai the staff show negative gesticulate.

It bad service . He want only the problem it gone. you can follow by Facebook . Jakrapad Saksri FriendFox and Call to parent +66 833255506 / mom +66 869225445 e-mail

Thank You

By: ThaiDesign (offline)  Wednesday, 13 January 2016 @ 04:34 PM ICT  

With valve noise we assume that the sound is concentrated around the cylinder head of the engine. The valve themselves do not make the noise, it more likely that the sound comes from the camshaft chain. The Honda service manual writes that the cam chain should be inspected for wear and damage when unusual noise comes from the engine.

The problem is that the cam chain is not a easy to access service item and needs hours of work just to check if it is damaged or has signs of wear. Of course the official Honda service manual for the Honda CBR300R is pretty vague and it's up to the mechanic to identify what is a “unusual sound” and what is not.

Two identical motorcycles next to another with different air-filter will already sound different, and most owners of the Honda CBR300R also change the stock exhaust system…

But we're very confident that the problem is the cam chain or the cam chain guides that are the source of the problem.



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By: news (offline)  Wednesday, 13 January 2016 @ 04:50 PM ICT  

The Honda CBR300R service manual writes about "Excessive Noise" coming from the engine top-end... I included a screen-shot from the Honda CBR300R service manual...

Click on image to download



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By: news (offline)  Wednesday, 13 January 2016 @ 09:24 PM ICT  

Of course we never hear the original problem sound, we contact about most of the mechanics of the larger Honda dealers and ask them what would be a “Excessive Noise” from the engine….

So our chef mechanic (Thai) who worked for several manufacturers around the world, including names as Ducati, Aprilla, S&S and Kawasaki, called several mechanics from the dealer list and got very inconclusive nobody of all dealers and Honda service centers was able to describe what is “Excessive Noise” from the top-end (cylinder-head) in a uniform matter….

The only mechanic who made some sense was a mechanic from Honda BigWing Bangkok who said that “excessive noise” would also be detectable by unusable vibration… Wish is again something not specified in the Honda CBR300R Service Manual … so how can Honda tell dealers and service centers to look for extensive sound when they themselves are unable to specify that sound…



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