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GS750 engine knock. Cam chain loose? *Video*

  • Thread starter Thread starter CanadianGSguy
  • Start date Start date
C

CanadianGSguy

Guest
The bike started making this noise and it's continued to get worse over the summer. My neighbour seems to think it's the cam chain. This is my first summer with the bike so I'm not familiar with the internals and how they fit together. The noise only seems to happen at idle, whether the engine is warm or not. The bike has 28k miles. I would greatly appreciate some troubleshooting assistance.

Video here:

https://youtu.be/UR2X1QrVeIc
 
tom203 said:
Might be cam chain adjuster- installed right and not frozen from sitting, it automatically takes up chain slack. Don't listen to worsening noises, fix problems.

http://www.alpha-sports.com/spst/1977 GS750/03.htm?q=suzuki-parts
Click to expand...

Thanks for the advice. I guess what I'm looking for is a trained ear to hear the problem and with better certainty then my ear, give me a better idea of what the sound is. I'm working on the assumption that a loose cam chain has a more specific sound then other internal engine issues.
 
My old ears can't help here. But if chain skips on sprockets, the noise will be real unpleasant ! Best to figure bike is calling for maintenance of many items. Don't assume that all is well, be sure.
 
It doesn't sound like the chain to me. It sounds like cam walk which is very common in these bikes. Does the noise stop when the motor is spinning faster than about 1500 rpm? Search for cam walk, there are plenty of threads on the subject.
 
jsandidge said:
It doesn't sound like the chain to me. It sounds like cam walk which is very common in these bikes. Does the noise stop when the motor is spinning faster than about 1500 rpm? Search for cam walk, there are plenty of threads on the subject.
Click to expand...

Yes of does! Thanks I'll search the forums!
 
I am having a clatter in the top end of my back, I would like to see if some more seasoned ears can point me in the right direction on identifying the source. This is my first bike to own and maintain and first Suzuki to even ride. I have a link to the video of the engine sound. https://youtu.be/9Duuq8Trjlc I am hoping somebody sees this soon. I will be posting on other threads as well for ideas and tips for the other minor issues I need to deal with. I am new to this site and forum obviously, so any direction is greatly appreciated. - Lonemoccasin
 
They all do that sir !. It sounds like cam walk, my 750 and 100 do it sometimes its annoying and embarrassing.
 
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