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supremacy
12th November 2010, 15:58
Afternoon all.

I've just finished an 800k ride down the south island. All went reasonably well except for soreness!!

In the last 200ks of the trip I noticed that the engine was making a clicking noise when I came off the power (closed the throttle). Is this pinking/detonation? And furthermore, is it something to be worried about? I use 96 octane fuel all the time, is there such a thing as 'off' fuel?

Maybe this is too high or low octane for my bike?

Any thoughts/help greatly appreciated as I'm riding another 800k on Monday!

MSTRS
12th November 2010, 16:04
Pinking does not happen on deceleration, only when giving it gas under load with fuel that is too-low an octane for the timing.
How many kms has your bike done in total? I'm thinking cam chain/tensioner.

porky
12th November 2010, 17:54
Back to back 800km rides on a 250. Those were the days........
Hope you get the issue sorted. As mentioned Id go with the cam chain theory or drive chain, something clanging about when the load comes off it.

Motu
12th November 2010, 18:34
Little ends as you roll off the throttle.

supremacy
12th November 2010, 20:14
So is this something I can fix myself? It's done about 39k

_STAIN_
12th November 2010, 20:33
lube the drive chain and check it's not too lose

supremacy
16th November 2010, 15:36
Yeah it was the chain, must've loosened itself. Thanks for the help.

It actually happened again on the way home. Maybe a sign you shouldnt do a 1000k trip on a 250! :scooter: