Help with 4bbl carb

[MuscleCar91]

Hey guys,
I have a few questions about my 4 barrel carburetor.
First off the car is running rich (Smell gas and lots of smoke along with poor mpg) i'm not having very good luck fixing it. I will admit i don't know much about tuning a carb so i am kind of taking shots in the dark when i try to tune it. I have screwed both needles in and unscrewed them both 1 turn and it ran fine yesterday, Now today i go out and start it up and it's smoking again... Another thing I notice the plate on the secondary gets stuck open about 1/4" inch but there is a screw that looks like i can adjust so it shuts completely, Is it suppose to be open? It runs kind of crappy when i shut it completely.
Any help would be appreciated!
Thanks,
~Nick

 

[moparchris]

What kind of carb is it?

 

[MuscleCar91]

errr edelbrock 1403.

 

[SomeCarGuy]

Vaccum leak.

Choke allows it to make up for the air and run.

Going to bed. Help later.

 

[george68hemirr]

if it ran fine one day and shit the next you may have some crap in your gas and may need to take apart your carb and blow it out/change fuel filter/new carb base gasket

 

[bstan70rr]

You could have the accelerator pump in the wrong position? This solved my problem once:

Locate the little small triangular shaped plate on the top left side (driver side) of the carb. There should be a small clip that has two places it can clip into. Take it out and put it into the other slot. I believe there are small alligator clips holding it in place.

Adjust the carb once more and give it a shot. If that does not work, put the clip back and try something else. If nothing else, you get to find out a little more about the carb.

 

[MuscleCar91]

Thanks guys,
I will try out your suggestions, It ran fine but was really dirty then about 3 months ago i bought some carb cleaner, cleaned it and it looks brand new. It ran like crap for a day or two til i assume got the cleaner out of the carb/intake.

 

[moparchris]

Throw it away and put a Holley on it. :acme:

 

[moparstuart]

Throw it away and put a Holley on it. :acme:

only if its three two barrels

 

[MuscleCar91]

Throw it away and put a Holley on it. :acme:

only if its three two barrels

I'd love to do that but this is only a 318 lol. I'm saving up for a big block so I can get a 6bbl

 

[ACME A12]

Throw it away and put a Holley on it. :acme:

 

[george68hemirr]

Thanks guys,
I will try out your suggestions, It ran fine but was really dirty then about 3 months ago i bought some carb cleaner, cleaned it and it looks brand new. It ran like crap for a day or two til i assume got the cleaner out of the carb/intake.

so you are saying shes all fixed....great

 

[MuscleCar91]

Thanks guys,
I will try out your suggestions, It ran fine but was really dirty then about 3 months ago i bought some carb cleaner, cleaned it and it looks brand new. It ran like crap for a day or two til i assume got the cleaner out of the carb/intake.

so you are saying shes all fixed....great

No I was too busy over the weekend. I may get some time later today. We'll see...

 

[SomeCarGuy]

Might have got a little dirt stirred up and covered the air bleds. Little tubes on the top of the carb. That would cause some crappy running.