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Secondaries not opening 620


Evs-One

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Pretty new to carbs here, minus Edelbroch 650's :P

 

I figured out that the secondary definitely isn't opening..using the paperclip trick. Diaphragm appears OK, cut down the spring, and still nothing.

 

Any starting points? Thanks!

 

74 620 truck stock engine.

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rev up the motor and put your hand ove rthe main barrel and see if the 2nd open. Since theyre will be alot of vaccum it should open. Habe you pushed on it with your finger to make sure its not jammed up.?

 

Manually opening up the secondary the jet feeds fuel and all seems fine. It's just not opening when it's supposed to :(

 

 

on my 1200 the electric choke wasnt opening. i put a couple drops of penetrating oil on the shaft and it freed up.

 

I'll try that!

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