crustydemons666 Posted July 10, 2010 Report Share Posted July 10, 2010 hey, would anyone know why my auto choke would be making the car rev right up(like 5k+ revs) when its cold. If i hold the little arms/leaver(circle in picture) down to keep the butterfly open it seems to rev alright..... if i don't hold the leaver down the butterfly closes and the car wants to rev out till its warm. i had the carby off the car a while ago while i was doing some work to the motor. not sure if all the hoses are in the correct spots. Cheers Zac Quote Link to comment Share on other sites More sharing options...
Evan G Posted July 10, 2010 Report Share Posted July 10, 2010 +1 i got the same problem with my 4k carby, its hard to start. when it starts it revs to 2 grand, blimp the trottle and it goes all the way up to 5 grand? i think it has to do with the dashpot? Quote Link to comment Share on other sites More sharing options...
crustydemons666 Posted July 10, 2010 Author Report Share Posted July 10, 2010 +1 i got the same problem with my 4k carby, its hard to start. when it starts it revs to 2 grand, blimp the trottle and it goes all the way up to 5 grand? i think it has to do with the dashpot? similar problem, never used to do it till i took the carby/manifold off and put it back on. Quote Link to comment Share on other sites More sharing options...
Evan G Posted July 10, 2010 Report Share Posted July 10, 2010 similar problem, never used to do it till i took the carby/manifold off and put it back on. same here! i adjusted the accelerator cable so it had some slack on it and then i couldnt start it, soo as it did start bang 3 grand. it makes no sense! it was running sweet before, i didnt play around with any vaccum lines etc etc then things like this happen.... Quote Link to comment Share on other sites More sharing options...
Gspec Posted July 11, 2010 Report Share Posted July 11, 2010 Your hoses look alright from that pic but i'll attach a vacuum hose diagram for you. How open does your choke have to be before the revs are correct? How shut is your choke for the revs to go 5k? Quote Link to comment Share on other sites More sharing options...
crustydemons666 Posted July 11, 2010 Author Report Share Posted July 11, 2010 same here! i adjusted the accelerator cable so it had some slack on it and then i couldnt start it, soo as it did start bang 3 grand. it makes no sense! it was running sweet before, i didnt play around with any vaccum lines etc etc then things like this happen.... I checked all my hoses they seem to be in the right places, i ended up wiring the dashpot/butterfly leaver together to keep the butterfly open.... seemed to sort the problem out. maybe give that a go dude Quote Link to comment Share on other sites More sharing options...
Scoobzd Posted July 16, 2010 Report Share Posted July 16, 2010 Where the green circle is, is the vacuum actuator for the Auto choke. There is a neoprene diaphram inside it and they fail after 30 years. Try Repco or a carby shop for replacement ones :) Quote Link to comment Share on other sites More sharing options...
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