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Tuning 34adm weber

I have fitted a reconditioned 34adm weber Carby and it's not
To well how do I go about tuning it I have set the idle
Mixture but not sure how to do the rest Can the float be adjusted or
What do I do any held would be appreciated or if anyone can point me to a good
Place that does Carbys I'm in Broadford Vic and hope to take the ute away next weekend

Model: 

Comments

as long as the carbies are jetted correctly for the engine capacity, the rule is to wind the mixture screws in all the way, then wind them out 1 1/2 turns as a starting point. If you can use a gas analyser, the optimum mixture setting is 13 1/2 to one at idle. setting carbis is like tuning a radio.......set the idle up a bit (about 900 rpm) then trim the mixture to the point where it sounds the best/happiest. winding in leans it out, winding it out enrichens it. then trim the idle down to about 750 RPM and it should go well, granted you have the electrical side sorted properly. I believe it is a fine art tuning carbies, so if you are not confident, give it to a good old school mechanic to set for you. Once webers are set, don't touch em again. same goes with SU carbies.

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mckackie

if your fuel pressure is above 3.5 psi it might be flooding the carby. some of the 34adm have a fuel return line from carby back to fuel tank to over come this.

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