New carbs 4000 rpm start

[Datonedatsun]

Looks kinda ghetto didnt put heat shield back on so I couldnt pin the springs down so I just wrapped one around to pin them back...

[Zed Head]

You'd be surprised at how much air can get through that small gap around your throttle valve.  I think you need to adjust those so that they're fully closed.

[Datonedatsun]

Alright I'll do that tomorrow after work and post back the result if it fixes the problem ? thank you 

[7tooZ]

That choke cable doesn’t look right  here’s mine  

like right7

Is your nozzle all the way up

[7tooZ]

15 minutes ago, Zed Head said:

You'd be surprised at how much air can get through that small gap around your throttle valve.  I think you need to adjust those so that they're fully closed.

Is that butterfly gap about what the full choke position opens them to?

doesnt full choke drop the nozzle and open the butterfly?

Edited April 28, 2020 by 7tooZ
Added thought

[Datonedatsun]

Nozzles are all the way up

[7tooZ]

Did you disconnect the choke cable?

[Datonedatsun]

No sir but originally I didnt have the choke wires hooked up and it still did it before 

[Captain Obvious]

I can't make out both butterflies, but the one I CAN see is not what I would call "closed". Different cars need different amounts, but IMHO, that's open much further than idle.

And some other weirdness, although I'm not sure it's related:

1) It looks like you're using 72 spacer blocks between the carbs and the intake manifolds, and they are upside down. I'm not sure that's causing you a vacuum leak or what, but if you're sucking air in there and then opening the butterflies to "compensate" maybe?

2) The linkage between the two carbs looks a little too short. Looks like the ball on the left side in the pic (front carb) is close to falling out of the receiving hole on the carb. I'm not sure what all the years parts you're working with here, but that's a problem that often occurs when there are 73 or 74 parts involved. I don't think you've got that, so I can't explain the issue there.

[Datonedatsun]

Sorry late reply, gonna go pull them off and adjust the butterfly and flip the spacer blocks I'll post some before pics of the carbs before I took them off 

[Datonedatsun]

Sorry late reply, gonna go pull them off and adjust the butterfly and flip the spacer blocks I'll post some before pics of the carbs before I took them off 

[240260280]

Do you hear air at this port?