08 WR450F noise in engine
Posted October 23, 2009 - 09:38 PM
Posted October 24, 2009 - 04:54 AM
Posted October 25, 2009 - 08:09 PM
Posted October 26, 2009 - 05:42 AM
Off the bat my first thought was/is maybe the decomp lever on the exhaust cam, but I think you would notice a power loss is something is awry with that.
Posted October 26, 2009 - 05:49 PM
Posted October 26, 2009 - 07:19 PM
Yeah everything is normal and operating as normal and it's not using any oil or lost any power. No i haven't checked my clearance im going too do that today' Would i get that sound if one of my valve lifters was out a bit that's what i think it may be
Yes you can get lifter noise if they are out, but they would have to be out by a fair amount. Another option might be your cam chain tensioner failing. If that is the case the chain would be slapping and that would cause a lot of noise.
Posted October 26, 2009 - 08:23 PM
Posted October 27, 2009 - 07:31 AM
As far as noise on the top end I would think it would either be the cam chain/cams or piston slap.
It is an automatic chain tensioner on the cam chain.
Pull of your valve cover- lot's of fun - and have a look in there.
If you don't have a manual there's one in the stickies at the top of this forum.
I've got a couple heelers myself, great dogs.
Edited by tribalbc, October 27, 2009 - 07:33 AM.
Posted October 28, 2009 - 12:32 AM
Posted October 28, 2009 - 07:05 AM
Posted October 28, 2009 - 07:24 AM
Yeah i checked my manual and seen how the lifters sit. So all in all it's time too go in and take a look so i might aswell rip the motor out and do my mods at the same time instead of fighting my way around the bike. Is their a manual tensioner for the wrf or should i stay with the auto. Yeah heelers are a great dog very loyal and are great for unwanted visitors. Cheer's:thumbsup:
Yeah dropping the motor isn't really too bad and it sure makes it easier working on the motor. It comes out easier if you remove the cylinder intake boot, but I managed to squeeze mine out with it in.
I'm not really sure if there's a manual tensioner available but the stock one seems to have limited failures. Mine was fine and it does a good job of keeping the chain tight. It has a one way ratcheting system so once it tightens a step it can't go back, spring tension won't effect it.
It's easy to test when it's out.
My heelers are in charge of bear control on my property. They keep them in check
Posted October 28, 2009 - 08:06 AM
Posted October 28, 2009 - 08:18 AM
Posted October 28, 2009 - 08:34 AM
Are you sure you're not hearing engine "ping" from detonation of the fuel? (Octane too low, too lean, etc.)
Thats what I was getting at.... You should have at least a 165 main. If the gas has been sititng in the tank for a few months that could be the issue causing a ping.
Posted October 30, 2009 - 07:21 AM
if it does not happen in neutral I'd bet the chain.
These are reliable but rather noisy motors.
Posted October 30, 2009 - 07:46 AM
Posted October 30, 2009 - 04:14 PM
I'm not sure what your problem is. The engine on my '07 WR-450 only makes strange noises anytime it's running.
Mine too... very noisy engines, but never a problem!!