motor noise 2001ex

[dunerr]

On my last outing i noticed the motor making a new noise. occasionly it sounds like timing chain noise. i notice it about 10% of the time at an idle. is there an adjustment? i already reset the valves and checked the oil. The bike is stock and still runs great. i do press it hard hill climbing in the dunes. 100 hrs on engine:(

[Castor-426ex]

i dont think there is an adjustment it could be a worn out chain tensioner...or it could just be valve noise...only one way to find out.....tear her down
:D

[brian400ex]

Mine makes a noise too. I can only hear it going down the road when i let off the throttle. Sounds like it is coming from the left side of the engine. I just did the valves not too long ago. It might make it when i give it gas but, the Pro Curcuit pipe makes it hard to hear anything else. Its kind of a high pitch ticking noise. Maybe tinging noise.

[phatswinn]

theres lotsa moving parts in there, and theres gunna be noise, i just ignore it, sinthetic oil helped allitle but moveing metal parts are just gunna make noise

[brian400ex]

Sure does run good. Ive never really ridden another 400ex besides mine so its hard to compare noises.

[stupid driver]

hey brian400ex, i have that same tickin noise and im pretty sure that its the front sprocket and the chain. it just sounds like its comin from rite there when i let off the throttle.

[DEAL]

I find all 400s have alot of valve terrain noise when compard to other 4-stroke motors.

[dunerr]

thanks for all the input. At this point i will just monitor the noise and see if it gets worse or if it is just the way it is. most people woudnt have noticed it and if i had an aftermarket pipe there is no way i would even here it.
Thanks again.