Your donations help keep this valuable resource free and growing. Thank you.
|
Rbs carb |
Post Reply | Page 123> |
Author | |
Jjtxaz
AMC Apprentice Joined: Sep/20/2017 Location: FT. Bliss Status: Offline Points: 64 |
Post Options
Thanks(0)
Posted: Apr/15/2018 at 3:33pm |
Ok so I got my trans in and its running good now. Ran into an issue at a light when I tried to floor it and it just stalled. Did that a couple times before I figured out that I have to very lightly ease into it and once I'm going I'm good.
I've adjusted the idle screw and the fuel mixture screws but honestly I've never really messed with a carb before. I want to get it to where its responsive and doesn't die. It's just a cruiser but I'd like to bring/use it for work (40 miles round trip) . Any tips, tricks, links to running the carb. |
|
pacerman
Supporter of TheAMCForum Joined: Jul/03/2007 Location: United States Status: Offline Points: 9057 |
Post Options
Thanks(0)
|
The RBS carb is rather notorious for having a weak accelerator pump (or the seal in that pump just gets old and won't do the job). It sounds to me like that is your problem. I recommend getting a rebuild kit and rebuilding the carb yourself. Rebuild kits can be found at Mike's Carburetor Parts (google it) and elsewhere. Joe
|
|
Happiness is making something out of nothing.
|
|
Jjtxaz
AMC Apprentice Joined: Sep/20/2017 Location: FT. Bliss Status: Offline Points: 64 |
Post Options
Thanks(0)
|
Found the kit. Will be ordering it soon. Thank you. |
|
FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4742 |
Post Options
Thanks(0)
|
Opening the throttle wide open from a dead stop and not having the engine hesitate or stall is the hardest thing for a carburetor to do. There is a lot going on and everything about the natural way a carburetor works fights against being able to do that. Everything has to be just right in the carburetor for it to handle that. Little 1 barrel carbs seem to do it best. They handle being floored from a stop quite well usually.
|
|
1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
|
farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19676 |
Post Options
Thanks(0)
|
Yeah, it sounds like the accelerator pump is shot. Easy to see -- pull the air cleaner and look down the carb while you quickly open the throttle (or have someone sit in the car and mash the gas pedal). You should be able to SEE some fuel squirt into the carb. If not, accelerator pump is bad.
Easy enough to install a carb kit. One thing to not, don't use spray brake or carb cleaner inside the carb! It will swell the seals and render them useless. That spray carb cleaner is only intended to be used on the OUTSIDE of the carb. You can get a gallon can of carb cleaner that has a little basket for small parts in it. It's intended to put the carb parts in and let them soak a few hours/overnight. You can use the spray cleaner to blow out passages with the carb apart. It evaporate quick enough that you can blow out, make sure there's no liquid pooled anywhere, wait a couple minutes, then assemble without worrying about messing up the accelerator pump. If you have compressed air available that's better for blowing out passages. Just wear safety glasses -- some holes that look like through passages are blind holes and stuff blows back in your face. Can burn the eyes... need to ask how I know? |
|
Frank Swygert
|
|
tomslik
AMC Addicted Joined: Mar/07/2008 Location: Colorado Status: Offline Points: 680 |
Post Options
Thanks(0)
|
"Yeah, it sounds like the accelerator pump is shot. Easy to see -- pull the air cleaner and look down the carb while you quickly open the throttle (or have someone sit in the car and mash the gas pedal). You should be able to SEE some fuel squirt into the carb. If not, accelerator pump is bad. "
do NOT do this with the engine running..... |
|
67 american 290/4speed |
|
Jjtxaz
AMC Apprentice Joined: Sep/20/2017 Location: FT. Bliss Status: Offline Points: 64 |
Post Options
Thanks(0)
|
I did test the accelerator pump and it does give fuel. Tweaked it a little more and its a bit better. I ease into it now and it feels smooth. For now it'll do. Brought it to work and she did need brakes though. That'll be this next weekend project.
|
|
mramc
AMC Addicted Joined: Jul/12/2007 Location: United States Status: Offline Points: 3217 |
Post Options
Thanks(0)
|
FYI what year and car ? The 1969 RBS has some different parts. The accelerator pump is different for that year only it has some different parts. Don't know why , but I have one on my base 69 Javelin. LRDaum
|
|
LRDaum
|
|
Jjtxaz
AMC Apprentice Joined: Sep/20/2017 Location: FT. Bliss Status: Offline Points: 64 |
Post Options
Thanks(0)
|
It is on a 1969 AMC Rambler 2 DR with a 199 3.3L I6.
|
|
mramc
AMC Addicted Joined: Jul/12/2007 Location: United States Status: Offline Points: 3217 |
Post Options
Thanks(0)
|
Yep, The 1969 RBS is the odd sock of the lot. The accelerator pump shaft has a weird size different from before or after , so the universal kit you'll probably get will not have all the right parts. Most of them but there are not for the odd year. I hope you get the right kit. But if you find the pump and one or two other parts are not right drop me a PM . The kit is available from the outfit in MO. that picked up all the old Carter one and two barrel parts Edelbrock did not want when they bought all the Carter four barrel stuff. I have to look up the outfit but last I heard they still had the right parts. What I did was I happen to find a rebuilt 1968 RBS redone on sale on EBAY and I replaced my RBS with that one . It was listed for a 1968 199 American but it worked perfectly on my 232 - 1969 Javelin. LRDaum
|
|
LRDaum
|
|
Post Reply | Page 123> |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |