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Should the primary and secondary idle jets be the same physical size? I ordered a jet kit from Carbs unlimited (http://www.carburetion.com/Weber/weberpartsjetkits.asp) and the primary idle jets that came with the kit are to big to fit inside the jet holder that screws into the side of my carb. Both the primary and secondary idle jet holders are exactly the same. Is this correct, or should the primary idle jet holder be larger than the secondary idle jet holder.
 

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Old Opeler
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Emmissions ...

Some later carbs have larger holes for the idle jets so that a solenoid will screw in there which physically shuts the fuel off.
There is an adaptor made to adapt early jets to the larger threaded hole.
HTH
 
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