carter carb issues
Thread Starter
|
Senior User
Joined: Dec 2010
Posts: 117
Likes: 0
From: Vancouver, Canada
carter carb issues
hey there so i just got a new to me carb b/c my old one literally died. what i got was a 650 carter. what happens though is if i am accelerating mildly abot 50% at some point it seems to lean out and if i push a little harder i get a pop or if i jsut lay off a little bit then lay into it kickdown drops and off to the races i go. anyone else had these kinda issues with a carter?
Hotshot
Joined: Feb 2004
Posts: 10,726
Likes: 2,584
From: The Shenandoah Valley
I assume the carb is in good working order?
Your '78 likely has a 351M or 400 and stock fuel pressure is about 7 psi on them .... if that's what you have.
The Carter 4 bbl carb is pretty much the same as an Edelbrock 4 bbl carb as the Edelbrock is a modernized copy. They both need a fuel presure regulator to limit fuel pressure to under 6 psi, 5.5 is what Edelbrock recommends.
The Holley 12-803 works great for this. Do not wasted $$$ on Spectra or "Mr G" FPR. They do not have sufficient flow nor do the accurately control pressure.
Your '78 likely has a 351M or 400 and stock fuel pressure is about 7 psi on them .... if that's what you have.
The Carter 4 bbl carb is pretty much the same as an Edelbrock 4 bbl carb as the Edelbrock is a modernized copy. They both need a fuel presure regulator to limit fuel pressure to under 6 psi, 5.5 is what Edelbrock recommends.
The Holley 12-803 works great for this. Do not wasted $$$ on Spectra or "Mr G" FPR. They do not have sufficient flow nor do the accurately control pressure.
Hotshot
Joined: Jan 2011
Posts: 13,120
Likes: 345
From: THIS IS SPARTA!, ...Mo.
I've been having a problem with these carbs myself lately. Since I rebuild them for other people, it can be a real problem when they don't work right. Go get a rebuild kit for it. Take it apart and use about 3 cans of carb cleaner to get everything spotless. Use the little straw that comes on the side of the carb cleaner to blow out all the passages. Take special car with main jets, squirters, and accelerator pump well. Now, because of the accelerator pump design on these things, the float adjustment is CRITICAL. 7/16" closed and I think an inch and something open. (The kit will have the numbers on the instruction paper)
If you do all this, it should be fine. Carters and Edelbrocks aren't near as forgiving when a problem arises. I recently tried to put a 625 CFM Carter on a worked SBC and couldn't get it to run right for the life of me. I literally pulled pieces of Holley off the shelf and built a carburetor out of spare parts and it ran like a new one. The Carter was sold to me as a complete "working" carburetor. I'm not saying it's a bad carburetor, it just has to be PERFECT when it goes together or it won't run right.
If you do all this, it should be fine. Carters and Edelbrocks aren't near as forgiving when a problem arises. I recently tried to put a 625 CFM Carter on a worked SBC and couldn't get it to run right for the life of me. I literally pulled pieces of Holley off the shelf and built a carburetor out of spare parts and it ran like a new one. The Carter was sold to me as a complete "working" carburetor. I'm not saying it's a bad carburetor, it just has to be PERFECT when it goes together or it won't run right.
Thread Starter
|
Senior User
Joined: Dec 2010
Posts: 117
Likes: 0
From: Vancouver, Canada
yeah its truck is a 400, i got the carb from a guy real cheap cuz he jsut idnt need it. it was a on his car and he said it ran fine and of course i believe him. i will try all the suggestions and see what happens,
thanks guys
thanks guys
Thread
Thread Starter
Forum
Replies
Last Post
Dads76XLT
1973 - 1979 F-100 & Larger F-Series Trucks
10
Jul 28, 2017 03:30 AM
Sleeler69
1973 - 1979 F-100 & Larger F-Series Trucks
37
Feb 17, 2015 09:33 PM
CentralMassLandscape
1973 - 1979 F-100 & Larger F-Series Trucks
6
Sep 17, 2011 08:33 PM
soundman502
Fuel Injection, Carburetion & Fuel System
27
Mar 9, 2007 03:40 AM
Pwarrenn
Supercharger, Turbocharger, Nitrous Oxide & Water/Methanol Injection
3
Apr 19, 2006 08:02 PM
