tick tick tick

[jeremyd]

when i first start my 400, it will make a ticking noise for about the first 30 seconds. i can give it some gas and it will stop. once it warms up i doesnt do this anymore. what would cause this to happen?

[johnsls]

Hey look at me I'm giving engine advice.

It depends but everyones first thought is going to be you need to adjust your valves.

2nd - if not, Do you have a stage II cam? If so you will always have a little tick tick tick going on.

I don't need to worry about my engine though. Runs perfect.
:D thanks Steve

[400eXr1d3rZ]

Originally posted by jeremyd
when i first start my 400, it will make a ticking noise for about the first 30 seconds. i can give it some gas and it will stop. once it warms up i doesnt do this anymore. what would cause this to happen?

Might be time do adjust your valves.

[jeremyd]

my honda service dept. just adjusted them a few days ago.

[rYan01400EX]

How about the timing chain? May check that out..

[jeremyd]

yeah, it runs great i dont think it is really a big deal its just annoying. correct me if i am wrong.

[EXriderO2]

the ticking when you first start the 400ex is the decompression mechanism. it is completely normal. the only way you can avoid this is to upgrade cam shaft, upgraded cam shafts do not use the decompression mechanism

[JOEX]

Originally posted by EXriderO2
the ticking when you first start the 400ex is the decompression mechanism. it is completely normal. the only way you can avoid this is to upgrade cam shaft, upgraded cam shafts do not use the decompression mechanism
Then it'll tick all the time:p

[jeremyd]

thanks exrider02 for the great info!! i appreciate it.

[STEVENJANNA]

That ticking sound is the time bomb that's inside your motor. When it stops ticking "LOOK OUT, IT"S GONNA BLOW"

[asa400ex]

Originally posted by EXriderO2
the ticking when you first start the 400ex is the decompression mechanism. it is completely normal. the only way you can avoid this is to upgrade cam shaft, upgraded cam shafts do not use the decompression mechanism

I agree.

I have seen this on 3 different 400ex's. All new out of the box. If your bike is new it is normal. I would worry about it enless your motor has a lot of time or you have done motor work.

[cremmenga]

I'd also agree it is the decompression mech. in fact mine was doing it and I was all worried and my brother in law, who is hard core 400ex racer said it was just that. He reached down adjusted the idle to a bit faster and badabing badaboom in 2 seconds it was gone and it has never come back!!!!

[blasterandy]

I have question kinda wanna piggy back on his first question. My atv when it revs it sounds kinda like a screw is coming loose. Like a chhhhhhhhh when its one the decel like from 1/2 throttle to 0