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2006-400ex
03-12-2008, 07:01 PM
I recently changed the valve cover gasket on my 2006 400ex.. before this i noticed a ticking noise inside the motor.. when i first started it up (cold) the tick noise was very noticeable and much louder.. but once it warmed up the ticking became less noticable and not as loud.. would anyone know what might cause this... valves maybe? it has recently been rebuilt... just need some imput on it plz.. or if anyone has experiecned this b4
REDRIDDER
03-12-2008, 07:07 PM
adjust your valves .. intake is 0.004in or 0.10mm, exhaust is 0.005in or 0.12mm. set your valve lash when you enine is cold..:)
CarGuy7a
03-12-2008, 07:09 PM
that's normal even if the valves are adjusted properly. if it is really excessive you might check the exhaust gaskets, that will make it tick pretty loud. these motors are noisy.

i've got a hotcam stage 1 in mine and it ticks alot louder than a stock motor, but they say it's normal and i've never had any problems.
REDRIDDER
03-12-2008, 10:00 PM
Originally posted by CarGuy7a
that's normal even if the valves are adjusted properly. if it is really excessive you might check the exhaust gaskets, that will make it tick pretty loud. these motors are noisy.

i've got a hotcam stage 1 in mine and it ticks alot louder than a stock motor, but they say it's normal and i've never had any problems. x2 although my hot cam stg 1 never really made that much more noise over stock as everyone else says.hmmm wieird.I believe you cause my buddies has a hot cam stg1 and is louder than mine?
2muchquad
03-12-2008, 10:48 PM
It could be cam chain slap...
fultz416ex
03-13-2008, 12:36 AM
i just installed a stage 1 hotcam and mine is louder than before. seems to run good. we will find out this weekend.
2006-400ex
03-13-2008, 07:21 AM
not the cam chain.. i had top of head off to replace gasket and the chain looked good and had no slack at all.. im not sure if valves have ever been touched b4... ill take a look at them while all plastic and stuff is all off.. not sure how to adjust them really..
2muchquad
03-13-2008, 08:37 AM
Make sure the piston is at TDC,(look for T in inspection cover),.004 for intake and .005 for exhaust.Feeler gauge should have slight drag....Once you do it,its quite simple.;) Consult a manual if your not too sure