Re: 1974 Sonett III - Installing a Manual Choke on a FoMoCo carbureto - Saab Sonett Bulletin Board - Saabnet.com


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Re: 1974 Sonett III - Installing a Manual Choke on a FoMoCo carbureto

Posted by juanm [Email] (#201) [Profile/Gallery] (more from juanm) on Sat, 21 Apr 2018 10:59:20 Share Post by Email
In Reply to: Re: 1974 Sonett III - Installing a Manual Choke on a FoMoCo carbureto, JimH, Thu, 19 Apr 2018 20:20:52
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Thanks for your reply JimH.

I would like to keep the original automatic choke but it doesn't seem to want to cooperate.

The piston was frozen and I did manage to free that up. The water lines in the choke were gummed up with debris. I cleaned that up too.

However, the while the car runs well. It typically idles at about 2,000rpm initially and then it slowly creeps up to about 3,000rpm. If I manually play with the choke I can get it down to about 1,200 RPM and it stays steady until I give it some gas and then it returns to an idle of about 2,000 rpms again and then creeps up. tapping on the accelerator doesn't cause it slow done. I have used the two adjustment screws and that hasn't made a big difference. Sometimes it is difficult to start and if I make manual adjustments, it starts quickly. The butterfly valve is clean and does not stick in one place. So I am thinking that I want to go to a manual choke.

I also am contemplating removing the deceleration valve (as I have been advised by several folks).

I thought if I had the manual choke then I would have more control. I did buy one of the kits by DORMAN but the parts don't really fit.

Thanks for your input.


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