studequest Posted May 31, 2016 Report Share Posted May 31, 2016 I have a supercharged Avanti Engine in my 1955 Conestoga Automatic Transmission Pertronix Edlebrock Marine Carburetor Electric and original fuel pump Air conditioning I was having surging issues My Boost Pressur is 3 to 4 I was making very good vaccum My fuel pressure was about 10 My mechanic felt the issue was the choke plate and he removed it He said the car ran much better I have not driven it I am concerned about no choke and I am wondering about the logic of this approach (I can see that if the choke did not disengage, I would essentially be running a 2 barrel carb I should also add that I have a kick down solenoid which is not functioning and I have been advised by John Erb and Craig Conley to just leave it out of the circuit and not replace it Your thoughts?? Thanks Keith Link to comment Share on other sites More sharing options...
mfg Posted May 31, 2016 Report Share Posted May 31, 2016 Nice setup!!...but could you describe in a bit more detail when the surging occurs, engine temp, etc? Link to comment Share on other sites More sharing options...
studequest Posted May 31, 2016 Author Report Share Posted May 31, 2016 Surging occurs as you step into it no problems with overheating no problems with starting with the choke I describe it as missing Plugs checked, gaps correct no fouling of plugs there is but 15,000 miles on this engine rebuild Link to comment Share on other sites More sharing options...
mfg Posted May 31, 2016 Report Share Posted May 31, 2016 I'd cut clean at about 50mph after accelerating hard and read the plugs...that would give you an indication (too rich or too lean) of what's going on inside the cylinders under acceleration. Definitely sounds like a carb issue. Link to comment Share on other sites More sharing options...
studequest Posted May 31, 2016 Author Report Share Posted May 31, 2016 I think we agree on that my issue was how people felt about removing the choke plate and having no choke My mechanic friends who build all kind of cars - cobras and other vintage cars - say choke is not necessary and they don't use it If really pushed they offer me to put in a cable choke rather than the electronic thermostatic spring type we see in the 50-s 60s cars My 53 stude has a cable operated choke comments Link to comment Share on other sites More sharing options...
mfg Posted May 31, 2016 Report Share Posted May 31, 2016 Since you live in a warm climate year round, (I think!), you really don't need an operating choke...it can be fixed wide open. Link to comment Share on other sites More sharing options...
studequest Posted May 31, 2016 Author Report Share Posted May 31, 2016 This is what I am being told keith Link to comment Share on other sites More sharing options...
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