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#339304 11/20/2007 4:46 AM
Joined: Jan 2003
Posts: 48
4
Apprentice
Apprentice
4 Offline
Joined: Jan 2003
Posts: 48
Hi,

My 47 has developed a habit of stalling at stop lights. Usually only after I've been at high speed and come to a light. At low speeds it does not seem to happen. If I pull out the choke a bit to raise the idle as I approach the light, all is okay. Do I have the carb adjusted too lean? Or the idle too low? Or is it something else? Any help appreciated. There is nothing worse than being stuck at a busy intersection cranking away with the 6 volt.

Thanks, Wilber


Don't read the directions, that'd be too easy.
Joined: Jul 2004
Posts: 5,708
A
'Bolter
'Bolter
A Offline
Joined: Jul 2004
Posts: 5,708
Wilber,

I don't know what is exactly wrong with your rig, but if it were me, I would go through some carburetor tuning steps and just see if that helped.

A ballpark figure for the idle air mixture screw is 1 1/2 turns out. I would slowly adjust this until I got maximum RPM, then open it about 1/8th of a turn.

I would set the warm idle at around 500 to 550 RPM and make sure the return spring brought it properly back against the screw.

If you're able, it wouldn't hurt to pull the top of the carburetor and check the float height. After you are all done and back together, make sure everything is tight and there are no vacuum leaks.

You could pull the line to the vacuum advance and use your mouth to pull a vacuum to see if the diaphragm is intact.

Do all these things and see if the problem is solved...if not, formulate a plan B and carry it out!

Stuart


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