Re: idle mixture trouble

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Posted by Tim Daley(MI) on August 31, 2017 at 06:29:56 [URL] [DELETE] :

In Reply to: idle mixture trouble posted by JohnB on August 30, 2017 at 20:24:27:

Yes, what Tony said below, and the brass Idle Air jet, p/n 9N-9596, orifice is very small, gets plugged and/or gummed up. The Idle Air Mix Screw, on the side of the carb, is also brass, and the pointed end that slips in to the that hole often gets worn and won't seal properly. I looked at a few of them up close, old and new, and an old one to the naked eye seems to look fine but when observed under a microscope, you can see the pointed end burred, out-of-round, and/or no longer pointed. It is always best to replace with new parts. You have the unit stripped down to bare bones, so why not do it right the first time and replace all the parts then?

Tim Daley(MI)

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