edge xc sp 440 knocking?

[broken_line]

when it is idleing there is a knocking noise comming from the clutch area. i dont know if its because of poor fuel or the clutch making noise? it only does it at idle rev it up a bit it goes away

[hydro]

BL, Is that the motor you just put back together?

[broken_line]

yes. i have it narrowed down to either a "lean condition at idle" causing detionation, wore out clutch or i dont really know haha. i had a mechanic of 20 years look at it with the jugs on and head off he didnt seem concirned with the up and down play( maby 1MM) when it was idling if i pulled on the belt so it put load on the motor the knocking got louder. but if i reved it up a hair it went away. it appears to be brand new as there isnt a SINGLE imperfection, scuff, sratch its like a mirror with the cross hatching still on it.

[Macgyver55]

I'd doubt that its detonation at idle. Exhaust temps are not even close to the temperature needed for that to happen. Could be worn flyweight bushings, rollers or pins in the clutch though.

[Black_Bay]

Change the bushings where your primary clutch weights ride.

[CoorsCaptain]

The sway bar rattles in the trailing arm on the edge chassis could it be that?

[broken_line]

there is no sway bar on it. it quit doing it now i also cleaned the carbs and lubed the clutch

[Black_Bay]

there is no sway bar on it. it quit doing it now i also cleaned the carbs and lubed the clutch

Lubed the clutch? That's not the best thing to do. Not only does whatever lube that doesn't get flung off end up collecting dirt/belt dust but it could also cause your belt to slip. That inturn causes premature belt failure and heat in the clutches.

[broken_line]

i used graphite poweder. if the ves valves are dirty will it not run over 7000 rpms and only go about 10 mph yet idle fine and go to 6300 rmps then bog and stutter? i also noticed when i removed the cap from the valves that about a table spoon of unburnt oil/ gas mix came out. i am running pre mix..

[Surface Tension]

Clean the valves, light coat of oil, and check the bellows for holes.

[NAMASafetyDirector]

What you are likely hearing is the exhaust valves chattering. At idle the exhaust valves are in the down postion and the bases of the valves chatter on the bottom of the machined portion of the cylinder that they slide into. Pretty common, they all do it if the valves are clean and moving freely. No need to panic!