newbie question about 70 V code Roadrunner

[biomedtechguy]

Since I have a 6 pak 440, would this be a good forum to ask carburetor questions? I'm not sure, but I don't think my outboard carburetors are opening.

 

[super-bee_ski]

They are vacum advanced.
That is where to start your troubleshooting.
Do you have a simple Vacum gage?
I think you should have a "solenoid", for "Idle"
Is it operating correctly?

 

[MoparMitch]

Welcome to the site. Lots of great info here. Do a search on that subject here. I'm sure you will get answers.

 

[clazar]

They operate on vacuum. The carbs under normal conditions usually start to open at appx 3000 rpm's. Thats the appx vacuum condition needed. I know there are ways to check, but i don't know them. Hopefully someone will be able to let both of know. i also have a 70 v-code RR.

Chuck

 

[D575]

remove the vac line to the vac. pods and suck on it . while holding the throttle wide open - with engine off of course. or use a vac pump. they should open .

 

[68 HEMI GTS]

you should be able to suck them open by mouth. you'll also have to also use a finger over the kill bleed in each outboard carb for them to open. throttle will have to be wide open. i disconnect the return spring and set something on the gas pedal. that should atleast tell you if their capable of opening.

 

[biomedtechguy]

Awesome guys, thanks. Before I read these replies, right after I got home from another long day at work, I brought home a vacuum pressure transducer that plugs into a fluke multimeter. Free revving the motor, I got between 1 to a max of 4 psi of vacuum. I would say the average was 2 psi. I assume the motor pulls more vacuum under a load vs. free revving. Anyway, that's what I found. I will try the other suggestions and report back.

 

[biomedtechguy]

I made a 2 turn adjustment to each rod that connects the outboard carburetors. That and maybe driving it more (than it was before I bought it) seems to have solved the problem.