Vaccume Diagrams for a Carter Q-Jet? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Russell · 10-25-2003, 07:10 PM

Hey everyone!!

I found out why my truck was accelerating and running so badly under pressure - only one of my carb jets is actually squirting any fuel, so I've decided to rebuild the stock carb that was on there, a Carter Q-Jet. I can get the numbers and stuff off it if it helps, but I need to know how to hook my vaccume stuff back together the way it was. I was stupid and didn't take any pictures :S

I also need to know what rebuild kit to get from NAPA as well, and I'll rebuild it tommorow night after I get back from the wrecker.

**swervin ervin** · 10-25-2003, 08:14 PM

Take the number off the carb and go the parts store with it. They will give you the right kit for it. You should have an emissions sticker under the hood. It will tell you where everything was hooked up at stock.

Oh, don't forget while you are at NAPA, to get some of the carb dip. It comes in gallon cans. It's not cheap, but it will clean the carb like no ones business. Gas won't work for this.

Russell · 10-25-2003, 08:23 PM

I started on the old carb with some gas, but that was external stuff... I already have a can of carb cleaner, but I'll grab some of the carb dip stuff then. Hopefully I can get it rebuilt tommorow night so it is ready to roll on Monday morning...

Frank-id · 10-25-2003, 11:55 PM

There are only a handfull of carbs made for cars.
The factory carb for a GM truck was made by Rochester. The model carb is a Quadrajet. Carter is a company who makes carbs too. They are usually the Carter AFB now produced by Edelbrock. The other big carb maker is Holly.
After removing the carb, wash outside of carb to note all numbers.
A neet Q-jet reference page is...
http://www.carbs.net/quadnumber.htm
There are few vacuum lines to get confused. The length of the hoses and the locations will dictate reconnections.....

Russell · 10-26-2003, 01:58 AM

Thats the problem, I gave it a bit of a haircut not even thinking about putting this older one back on. Ends up it is infact a Carter AFB - its the exact same as the Edelbrock #1903 (795 cfm)

I got the installation guide from Edelbrock's website, and it has all the info I need. All I need now is some new vaccume lines. The old ones are crap anyways.

10-25-2003, 08:14 PM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Take the number off the carb and go the parts store with it. They will give you the right kit for it. You should have an emissions sticker under the hood. It will tell you where everything was hooked up at stock. Oh, don't forget while you are at NAPA, to get some of the carb dip. It comes in gallon cans. It's not cheap, but it will clean the carb like no ones business. Gas won't work for this. __________________ Mike 1985 Chevy C-10

10-25-2003, 08:23 PM	#3
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	I started on the old carb with some gas, but that was external stuff... I already have a can of carb cleaner, but I'll grab some of the carb dip stuff then. Hopefully I can get it rebuilt tommorow night so it is ready to roll on Monday morning... __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

10-25-2003, 11:55 PM	#4
Frank-id Registered User Join Date: Sep 2003 Location: Twin Falls, Idaho Posts: 73	Carb info There are only a handfull of carbs made for cars. The factory carb for a GM truck was made by Rochester. The model carb is a Quadrajet. Carter is a company who makes carbs too. They are usually the Carter AFB now produced by Edelbrock. The other big carb maker is Holly. After removing the carb, wash outside of carb to note all numbers. A neet Q-jet reference page is... http://www.carbs.net/quadnumber.htm There are few vacuum lines to get confused. The length of the hoses and the locations will dictate reconnections..... __________________ Chevy stepper 400sb 350 turbo

10-26-2003, 01:58 AM	#5
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Thats the problem, I gave it a bit of a haircut not even thinking about putting this older one back on. Ends up it is infact a Carter AFB - its the exact same as the Edelbrock #1903 (795 cfm) I got the installation guide from Edelbrock's website, and it has all the info I need. All I need now is some new vaccume lines. The old ones are crap anyways. __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

10-25-2003, 07:10 PM	#1
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Rebuilding Carter Q-Jet? Hey everyone!! I found out why my truck was accelerating and running so badly under pressure - only one of my carb jets is actually squirting any fuel, so I've decided to rebuild the stock carb that was on there, a Carter Q-Jet. I can get the numbers and stuff off it if it helps, but I need to know how to hook my vaccume stuff back together the way it was. I was stupid and didn't take any pictures :S I also need to know what rebuild kit to get from NAPA as well, and I'll rebuild it tommorow night after I get back from the wrecker. __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) Last edited by Russell; 10-25-2003 at 07:32 PM.



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