WR450 06 Cam chain noise?
Posted November 18, 2008 - 02:57 PM
So far i`ve pulled the left side generator cover off. All seams well. And i`ve also removed the cam chain tensioner and checked that it winds back by itself under spring tension...all is well. I`ve pulled the cam cover off and checked the cam chain. It looks tight - even when kicked over slowly. So i`m stuck. Is it possible that the tensioner can wind back under certain conditions. Also is it common for the camchain to wear on this bike? And lastly can anyone recomend an online supplier of camchains/tensioners here in the UK. Sorry for the long post.
Posted November 18, 2008 - 05:08 PM
Posted November 19, 2008 - 11:35 AM
There is a rattle at light loads/ mid revs thats sounds just like a camchain that's too loose, I think it's a case of get used to it.....
To be honest, I think it's piston slap. They have a very short skirt and a high compression ratio, and are not designed for gentle running or for noise regs. It's a lot of power to get out of a small(ish) engine and noise is a by-product.
Posted November 19, 2008 - 11:42 AM
next time you check your valve shim gap, take the cam chain tensioner off and lift the chain between the cams, if there is a lot of play, I would say it's time to replace it, when installing a cam chain, a new chain fits VERY tight even without the tensioner.
Posted November 19, 2008 - 05:25 PM
Posted November 21, 2008 - 04:20 AM
Posted November 22, 2008 - 02:33 PM
Posted November 25, 2008 - 02:30 PM
Posted November 26, 2008 - 08:22 AM
Is the AIS removed or are you on the stock jetting?
Posted November 26, 2008 - 10:46 AM
Posted November 26, 2008 - 11:23 AM
Now if its just a little "popping" when you decelerate thats not a big deal but if you are backfiring on the gas you need to get that sorted ASAP!
Posted November 28, 2008 - 08:11 PM