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Super Four Engine Noise
Posted: Wed Jan 16, 2013 1:56 pm
by Dominic NC31
I use a NC31 which belongs to a friend but I take care of it while he is away. However it is very noisey with a rattling sound from the engine as it idles. Someone said its the cam chain tensioner. How can I tighten this without having to disassemble the engine or going to a shop. I am in Thailand and as a foreigner that can be expensive and language issues as well. The bike works fine otherwise. Any advice is welcomed. Also can someone give me a link to a free download of a worksop manual. The bike is a 1992 CB400 Super Four
Re: Super Four Engine Noise
Posted: Wed Feb 06, 2013 5:14 pm
by tomigun
Dominic NC31 wrote:I use a NC31 which belongs to a friend but I take care of it while he is away. However it is very noisey with a rattling sound from the engine as it idles. Someone said its the cam chain tensioner. How can I tighten this without having to disassemble the engine or going to a shop. I am in Thailand and as a foreigner that can be expensive and language issues as well. The bike works fine otherwise. Any advice is welcomed. Also can someone give me a link to a free download of a worksop manual. The bike is a 1992 CB400 Super Four
Link:
http://www.mediafire.com/?ave961nl6q41kbr
Re: Super Four Engine Noise
Posted: Wed Feb 13, 2013 7:38 am
by Dominic NC31
Thank you for the link
Cheers
Re: Super Four Engine Noise
Posted: Mon Apr 06, 2020 8:04 am
by untonyto
tomigun wrote: ↑Wed Feb 06, 2013 5:14 pm
Dominic NC31 wrote:I use a NC31 which belongs to a friend but I take care of it while he is away. However it is very noisey with a rattling sound from the engine as it idles. Someone said its the cam chain tensioner. How can I tighten this without having to disassemble the engine or going to a shop. I am in Thailand and as a foreigner that can be expensive and language issues as well. The bike works fine otherwise. Any advice is welcomed. Also can someone give me a link to a free download of a worksop manual. The bike is a 1992 CB400 Super Four
Link:
http://www.mediafire.com/?ave961nl6q41kbr
Hey thanks man I have scoured the internet for this
Re: Super Four Engine Noise
Posted: Tue Apr 21, 2020 10:39 am
by moforockband
You won't be able to tighten/repair the tensioner, once they are worn they need replacing. Be sure that the cam timing hasn't jumped before going back on the road (check the manual). A very rough check is to turn it over by hand w/out the plugs in, but you should check the alignment marks on the crank and cams.