Edelbrock #1406 help?????

MY CARB IS AN EDELBROCK #1406 WITH ELECTRIC CHOKE, I AM HAVING A HARD TIME KEEPING MY CAR TO STAY ON, AFTER A FEW MINUTES OF HAVING IT RUN AND WARM UP , IT ALMOST SEEMS LIKE A COUGHING SOUND COMING FROM THE CARB AND THEN IT TURNS OFF, I ADJUSTED THE MIXTURE SCREWS TO WHAT IT ASK FOR 1 AND HALF TURNS, I AM RUNNING 5 PSI ON THE FUEL, I THINK I HAVE THE VACUUM LINES ACCORDINGLY, ALL VACUUM PORTS ARE USED EXCEPT FOR ONE OF THE VACUUM LINES IN FRONT OF THE CARB,I HAVE THE DISTRIBUTOR HOOKED UP TO THE PORT ON P***ENGER SIDE AND THE DRIVER PORT PLUGGED, I RAN THE BRAKE BOOSTER TO THE BACK OF THE CARB AND THE FRONT PORT IS FOR THE PCV, I ALSO HAVE A TURBO 400 WITH KICKDOWN AND IT IS RAN TO THE INTAKE, ANY HELP ANYONE, I THINK ITS SOMETHING SIMPLE??????????

 

tag...

 

Does it die when it is idling only? Or can you not even keep it running by pressing the gas pedal ?

 

I have pressed on the gas pedal and it idles and dies, it warms up a little and then dies after the coughing sound from the carb......

 

sounds to me like a vacuume probelm, i had the same thing happen, as my engine would warm up the vibration would make a old vacuume hose come lose. double check the lines are going to the correct ports. what engine is it?

 

It is a chevy 283 with a th400 trans, edelbrock carb #1406 and hei distributor, timing is correct and plug wires also.....all hoses are new..........

 

Is the hot idle set to slow? If it runs while the choke is partialy closed, its running on the fast idle cam. Kick it off and it quits, that's the first thing to look for. Then, is the carb and gasket covering all the open spaces on the manifold?

 

Is this how your vac***e lines are hooked up to the carb?

 

carb and gasket are covering and are set correctly on the intake, the car runs when the choke is partially open, the car starts right up but then warms up and shuts off with a loud coughing sound from the carb, my vacuum lines are hooked correctly with one question, my distributor vacuum is that supposed to be hooked up to the non emmisions controlled port correct?? do i need to plug up the other one????

 

Yes the port that you don't use NEEDS TO BE PLUGGED. For that 283, I think you need full vacuum on it. Drivers side and plug the other.

 

1-1/2 turns out is a starting place. Its generally close enough to start the vehicle , but rarely exactly correct. Your car shouldn't be running "good" when its cold and on the choke. Running yes , good no. It should be running rich, with significantly restricted air, trying to get up to operating temp.

Try backing the screws out 1/4 turn at a time until it idles off choke.
Then you can start tuning the engine.

 

YES it does need to be plugged - you have a vacuum leak!

 

So looking at the carb from the front the p***enger side vacuum port needs to be plugged and my distributor vacuum hooked up to the drivers side, correct????? I guess looking for the leak will be fun..........

 

The leak is that you don't have one of those two plugged. Use one, plug the other. It will run hooked to either one, but depending on your distributor curve and vac advance unit, one will run better for you

 

By backing the screws out 1/4 at a time when tuning the engine , where do i start, hoses timing , etc.?????

 

Vac advance unit???? Where is that????on the distributor???if so , how do i adjust or check that????

 

Are you using that carb on the stock intake for a quadrajet? that has large holes for the secondaries? If yes, did you get the plate that seals off the secondaries and mates to the carb? It is a flat steel plate that edelbrock makes to adapt the squarebore edelbrock carb to the spreadbore intake.
Edelbrock part# 2732

 

The carb is an edlebrock 1406 and the intake is edelbrock performer rpm just a gasket , do i need a certain plate for this set-up???

 

With the air cleaner off & the car idling look in side the primaries and see if you see gas kind of dripping inside there.A common problem with any carb is that alot of times if you turn them upside down the little "balls" fall out & **** things up.It happens alot with the one at the bottom of the accelerator pump tube.The ball is used to pull gas into the tube when the pump piston goes up & then seal the "inlet" hole when the piston goes down upon acceleration.
If your leaking gas into the venturis at idle you could have the back ****erflies open a little.
JimV

 

Edelbrock says you don't need a plate with the 2101 intake, but you most certainly DO. A quick check with a vacuum gauge will confirm it.

 

Are you familiar with the difference between square and spread bore carburetors and intake's? The Edelbrock 1406 is a square bore carburetor and if you have a spreadbore intake manifold designed for a quadrajet carb then it won't run correctly.

 

I have the performer edelbrock intake for the carb , is this set-up correct?? Do i need an adapter plate for this set-up??? I think i need to get a vacuum gauge...............

 

Are you familiar with the difference between square and spread bore carburetors and intake's? The Edelbrock 1406 is a square bore carburetor and if you have a spreadbore intake manifold designed for a quadrajet carb then it won't run correctly.

 

Edelbrock has a tuning guide on their site that you should study. It goes over every tuning aspect and gives numerous examples on jet/metering rod combos etc. It's not very hard once you understand how it works.

 

Performer RPM part # 7101 should take the 1406, 7104 is for the spreadbore (Quadrajet)

 

If it is a Performer RPM you do not need an adaptor.If it is a Performer than you will need one.I would start by adjusting the hot idle screw before you adjust the air mixture.

 

It is a performer rpm, and the hot idle screw is which one?????

 

The one on the throttle linkage.turn it in about 1/2 turn at a time and bring the idle up.How long have you had this vehicle.

 

never seen any "little balls" inside an Edelbrock carb

The one on the drivers side of the carb near where the linkage hooks up.

 

Thumbs up with Jimv, recently had a similar issue with the rear carb (an Edelbrock 1404) on the dual setup on my Belair. Took a look and surenuff had fueling running in the primaries. Carb had been sitting a while and need to be freshened up and a new float valve. If the carb wasn't new when you mounted it, take it apart and check it thoroughly and clean it thoroughly.