[ldavis]

After about 4 months of use from the dealership there a wierd noise coming from the engine. I do regular maintenace on it, changing the oil every half month and I dont usually go over maybe 1/4 throttle in fith gear. I think its coming form the cam chain being loose, is this somthing common and can be fixed or am I just being scared.

[JimDirt]

Welcome to the site !!

It could be the timing chain , or it could be the tensioner itself .... it could also be the clutch ... if you notice the noise , then pull in the clutch (while running) and you notice a difference in sound , but the same kind of sound , it could be the clutch basket rattling ....

Usually the timing chain stretches after a large amount of time , or if the engine was overheated or run low on oil .....can they just go bad ?? , yes , but it does not sound like you have a bunch of hours on it , so my next guess would be the tensioner itself , they do go bad , and they will allow the timing chain to chatter .... so that is what I would look at first , if the clutch test fails to show anything ......

There should be 2 adjusters on that bike , one at the back of the cylinder on the shifter side , and the other on the head on the same side , the one on the head is the fine adjustment , so I would try that one first , if the noise stops or changes when you move the screw , then you will know if it is the chain/tensioner , if you adjust it and set it and the noise stays away , then you should be fine ...

Here is a video that will walk you thru the procedure ...

[ldavis]

Wow thanks JIMDIRT, I really didnt think no one would answer but thanks man. Im going to see if adjusting the tensioner will help because I alreay checked the clutch basket. Thanks for the Video, really helpful.

[JimDirt]

No problem , keep us posted on the results....

[ldavis]

Him JimDirt I tried ajusting the chain but I dont think it did much and if it did it got louder, I saw somwhere that these bike are regularly noisey but I dont think it sopposed to be this loud

[RThiz]

i have the same Problem on my 2018 crf 2018. It also only has about 50 hours. So did you guys get any feedback from Honda?

Mick