EC300 Idle Revisited.

[stainlesscycle]

http://www.mikesxs.net/products-82.html#products


warning: i am not 100% sure these fit 36mm-38mm pwk. they do fit 32mm pwk. i know the float needle does not. at $3.00 it was worth the risk..

[Ud_luz]

Originally Posted by stainlesscycle

i found out you cannot order a jet block gasket for a tmx. urrghh..

I made one out of a sheet of heavy paper. What a PITA. I had the right size o-ring in my bag of o-rings.

[Ud_luz]

Originally Posted by moto9

I tried to find the jet block o ring in a exploded view of the carb, but it's not shown ???
Let me know
Thanks !!!

There's a thread around here with pictures of everything but I couldn't find it. It's very obvious how things are put together when you take it apart.

[moto9]

Originally Posted by Ud_luz

There's a thread around here with pictures of everything but I couldn't find it. It's very obvious how things are put together when you take it apart.

Good find !!!
I asked my bud to take his carb off and drop it off so I could take the jet block out and check it.
We were talking about this the other day...and because he's a beginner and new to the sport he didn't know that his bike was running like crap...he thought that was just how they are.
So, he's been riding the bike like this for almost 2 years, none of us knew until I took his bike for a good spin....it runs like s*#t.
So, I am on a mission to get it straightened out.
When I ran across your post, I thought that sounds just like the issue my buddy is having.
We'll see
In any case, thanks for posting it !!!

[GMP]

Could you use Permatex or Yamabond in place of a gasket or is it too critical? orings are easy to source.

[stainlesscycle]

it's pretty critical, there are a lot of tiny passages....

[GasGasDreamer]

Originally Posted by Ud_luz

If you even touch the idle air screw .......

This might be totally non applicable, BUT I have noticed that when I adjust the idle air screw, it effects the spark plug. Sometimes it just fouls it out and the bike dies. Sometimes, what is even worse then a dead bike, is it starts running very erratic and strange, almost to the point you think there are some major issues.

Again, dont know if this helps, but thought it might.



gasgasdreamer

[slocalspode]

Another thought.... Is your idle adjustment screw the plastic one or a brass one?
I had the plastic idle screw get hammered flat on one side from the slide being
dropped on it over time. Or maybe someone in camp kept snapping the throttle
when I was not looking....?!?!??
The bike would barely idle. If you turn the screw maybe 1/4 turn it would rev up
big time. Keep turning for a full turn and it would barely idle again.
I replaced the screw and problem fixed.
Worth the 5 min. to check.
Jeff

[Ud_luz]

Where did you get a brass screw?

[slocalspode]

Hmmmm... I think I replaced it with another plastic one, but, I can't
remember for sure... It has been a few years since this happened.
I think a brass one may be available from Sudco or maybe as an
OEM part from another bike that uses the Keihein carb. I think my
KDX200 uses the same slide screw..?!?!?? I'd have the pull them both
to be sure.
Jeff