Where is this noise coming from?

[chucked]

I hear a constant ticking in my engine, when I idle it really low it goes away but when throttle is given it immediately comes back, it ticks with the speed of the engine, and knocks once for every combustion stroke.

[44oEX]

you just have to set your valves

[chucked]

Originally posted by 44oEX
you just have to set your valves

nope, theyre fine

[Tommy 17]

what octane are u running????

[WhiteBros400ex]

Mine did thet same thing it was wrist pin and piston slap i got it fixed it still kind of did after a about 2 months later.I changed my oil then it stopped and come back sometimes but manly when its cold. TRy running like 93 or 94 octane and change ur oil.

[44oEX]

if it's not your vavle, it is probably your timming chain or your rocker arms are lose.

[chucked]

timing chain is tight, i run 93 octane, oil has been changed, how do i check the rockers??

[fastexgirl4c]

i had the same problem...i didnt knw about it till the timing chain blew up and the rockers blew right into engine...check ur rockers and the timing chain...and see if ur valves are good and piston

[chucked]

Originally posted by fastexgirl4c
i had the same problem...i didnt knw about it till the timing chain blew up and the rockers blew right into engine...check ur rockers and the timing chain...and see if ur valves are good and piston

How the crap do i check the rockers? what do I look for?????

[fastexgirl4c]

dont u have a manuel...thats how i figured out to check mine ...

[chucked]

Originally posted by fastexgirl4c
dont u have a manuel...thats how i figured out to check mine ...

yes i have a manual, everything is fine according to it.

[fastexgirl4c]

o..check the throttle and the carb...also check and see if u are at top dead center for the timin...that might be it

[chucked]

Originally posted by fastexgirl4c
o..check the throttle and the carb...also check and see if u are at top dead center for the timin...that might be it

its coming from the top end of the engine, it was at tdc. I even took all of the slack out of the valves just to see if it would go away but it didnt change.

[fastexgirl4c]

o then i dont knw..srry

[chucked]

Originally posted by fastexgirl4c
o then i dont knw..srry

yea i dont know wtc is up with it.

[44oEX]

to check the rocker arms just see if there is any play side to side.

You sayed that you had the motor at TDC when you set your vavles but did you have it at TDC on the exaust stroke or the compression stroke. It has to be on the compression stroke. To check just turn the motor until your intake valve go down and up again. Then try to find the T on the flywheel.

If that is not it I have no more ideas.

[chucked]

Originally posted by 44oEX
to check the rocker arms just see if there is any play side to side.

You sayed that you had the motor at TDC when you set your vavles but did you have it at TDC on the exaust stroke or the compression stroke. It has to be on the compression stroke. To check just turn the motor until your intake valve go down and up again. Then try to find the T on the flywheel.

If that is not it I have no more ideas.

Yea I made sure it was on the compression stroke, I think its the piston doing it. I might go ahead and drop in a high comp piston and a cam while im at it.

does it sound like these videos?

right click...save as

http://www.imagestation.com/picture/sraid110/pe1f0d3dbfd16d6a7f5a3635b318ee34e/f91b0fc1.mpg

http://www.imagestation.com/picture/sraid109/pfc6264b89e7072cc6b2adfd2fdca55ac/f9265cdc.mpg

[chucked]

Originally posted by Jumbo747
does it sound like these videos?

right click...save as

http://www.imagestation.com/picture/sraid110/pe1f0d3dbfd16d6a7f5a3635b318ee34e/f91b0fc1.mpg

http://www.imagestation.com/picture/sraid109/pfc6264b89e7072cc6b2adfd2fdca55ac/f9265cdc.mpg

kind of....

[kruzofman]

no dude its normal for a 4 stroke to be ticking a little, i just bought my 400ex last week tatlly bran new from my honda dealer and it has the same ticking sound, 4 strokes do that

[chucked]

Originally posted by kruzofman
no dude its normal for a 4 stroke to be ticking a little, i just bought my 400ex last week tatlly bran new from my honda dealer and it has the same ticking sound, 4 strokes do that

no dude its not normal, it just started and its loud.

Originally posted by chucked
no dude its not normal, it just started and its loud. :eek2:

[chucked]

Originally posted by Jumbo747
:eek2:

and for me its :mad:

[swamprider7]

It sounds to me like you didn't adjust your valves on the TDC of the compression stroke. I would double check that.

[chucked]

the valves are fine. the valves are set perfectly. The valves are good. Im starting to think it may be the cam chain because i can hear it slapping around, i think.

[44oEX]

take the chain tensiner(sp) out and see if you can put it till it hit the cylinder. if you can the chain is done.

[chucked]

update!!! Turned out it was the cam chain tensioner, IT just lost its spring pressure, Got a new one on there it sounds great!!