On Dec 19, 9:11*am, "Dan Kuechle" wrote:
Suppose the throttle is closed and the leak adds 10% to the air the
engine gets. That will make the mixture leaner. If you open the
throttle to let 10 times more air through the carburetor and the leak
stays the same, it will be adding only 1% to the air the engine gets, so
it won't matter much.

OK, I understand what you mean. I just don't know how this is related
to my situation.
Thanks anyway.

Jay Chan- Hide quoted text -

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Don't forget about the points. *They can cause symptoms that one would swear
up and down were carburetor problems. *Maybe your problem isn't in the
carburetor at all.

Dan

I don't know what you mean about the "points". Which parts of the
engine are called "points"?

Yes, the problem may not have to do with the carburetor. Now, I am
concentrate on the fact that the engine idles fast (not slow).
According to other web sites, this likely means that there is an air
leak somewhere in the engine.

Jay Chan