I have an 89 YJ 4.2L, years of dealing with the crappy Carter carb from day 1. Finally pulled it a few years back, put on an MC2150 and tore out miles of vacuum hoses and electronic crap. Now when I open the hood I can see the motor. Starts right up and idles fine. Its the best mod I have done to the Jeep. No emissions where I live so I don't have to worry about failing anything. I had the nutter also but ran into some electrical issues a few months back. I had an intermittent wire going to my coil and thought it was ECM related so i reversed the nutter to stock and never changed it back. Have not noticed any change in the idle/drive so all is well. Been running this setup for 4 years now.
Thank you so much for this video!!! I did what you did... disconnected the hose from the fuel filter ..tried starting...NO gas came out. Helped me to diagnose bad fuel pump. Took 30min total to fix (part store included-17$). 1981 CJ8
I'd be interested in the old carb. Up here in Indiana they don't emissions test. I have an 87 4.2 with that carb, but older and junkier. lol I have done the "Nutter Bypass'' which just bypasses the emissions, tricking the cpu part of the carb and junk. It runs perfect after and way more power.
THANK YOU. I hope this finally fixes my f**** problem with my Jeep. Had it for a year now and it hasn't ran right since I got it. And you have a new subscriber, sir. Your videos are GOLD. Hahah :'P
i have a bbd on my old plymouth 318 and i have a vent tube ontop of carb but it is plugged cause mya car dont have charcoal canister , is it ok that i plug the vent tube or should i just unplug it and leave it open or run a hose to a the oil breather cap .....also will unplugging the vent tube help with vapor lock ..i get vapor lock only on hot days which is like 10 days a year here in canada ...and i do not have a return line to the tank
I just got a 1986 with a Weber 2 barrel carb bad thing is it's only the 4 cylinder Motor the 2.8 and been trying to figire out what to do it runs everything ot came from 3400 feet and now is running in 8000 feet is it necessary to get it re jetted?
Hi I have a friend and his YJ is giving him a giant pain in the ass. It's never really run or started well - which I attributed to the crap Carter carb it can with. Now, however, when it's warmed up and I'm driving down the road, the choke closes and it dies. What I've researched says is a bad carb thermostat. I ordered a new one, but it looks like the original is riveted to the carb body and can't be removed?!? No screws. Wtf. Not sure where to go from here. Any advice would be much appreciated. Thank you,
Hey Dave, I've got a question for you if you're still around here on RUclips. I have an 86 cj7, it's got the 2.5L engine on it. All the pictures I could find tell me that the carb that is on it isn't the factory carb, I believe it is a YFA carb. However it still has all the electronics on it. I have no way of testing whether the jeep runs or not because the fuel tank isn't mounted up and I don't have a sending unit, or even any of the mounts for the fuel tank. I plan on doing the nutter bypass to get rid of all the emissions crap (i live in Indiana, no emissions here so no worries) but basically I need to know, what is a good affordable carb I can throw on this thing that will work? Could I put one on there from a pre 1983 2.5? Hopefully someone can help because I want to get this thing running by the time it gets warm outside
I've been there. After having a rebuilt (or was it new?) unit installed on mine a couple of years ago the Jeep has run pretty well other than running rich on start up and one of the two weird red lights in the center of the dashboard flashing and latter going solid (WTH?). Those computer controlled carbs are a mess to troubleshoot. I am looking forward to seeing that nutter bypass done and how it runs afterwards. Hoping your sister-in-law has continued to do better.
+melodicdreamer72 Thanks so much Bro Kris is continuing to slowly improve and is working hard on her PT. As far as the carb - did you get a rebuilt factory style replacement carb ?
Hi Dave...been a while since I was on YT... I brought the Jeep in to a shop when I first got it - was worn out to the point I didn't know where to start with it - mostly considering the '90 YJ emissions garbage. Anyways, they installed a new carburetor that was a supposed to be a direct replacement for the old Carter. If I knew then what I knew now ...you know how that goes. Bottom line though, if it weren't for it getting about 11 miles to the gallon, I would say she runs pretty good. I'll have to get some pointers on how you go about finding the vacuum leaks in the next video - I figure there must be a central point at which the smoke can be administered, but I haven't found it.
I have an '88 YJ with the 4.2, what's your thoughts on the Motorcraft 2100 / 2150 conversions vs the Weber? Look forward to seeing the swap on Devin's CJ. 👍
Digging the CJ series from the start! My dad had a 1980 CJ7, probably the reason I love Jeeps so much. I had a friend with an early YJ with similar issues too, darn thing stalled all the time. I'm pretty sure he ended up doing what you're about to do.
The 84-86 computerized carbs were absolutely a POS. My 86 CJ7 stalled every time I made a right hand turn. I swapped the carbs with several others of the same model and I did a couple onboard computer swaps. No dice. One day I pulled the computer harness from the carb and it actually ran better and didn't stall on right hand turns for about a week. In reality, the Jeep shouldn't have run once the harness was pulled! Then it started acting up again. Solution: 1978 AMC Eagle carb swap and manual choke setup and disconnected all the pollution control crap. It hasn't stalled since and I've owned it for 28yrs now. My 84 CJ7 would stall when it rained. Same carb. Throw those carbs out immediately. Even if it's working properly. Get RID OF IT. My most recent purchase. A 1980 CJ5, the carb (non computerized) was bastardized by a previous owner and it idles almost like the Jeep in the video. I'm not even going to deal with trying to make it right. My next step...Weber Carb Kit WK551 and the Holley 12-804 fuel pressure regulator, and new fuel pump. DUN DEAL!
6:28 Dude I've been looking where that f*cking ICM box is for around 3 months now and couldn't find a damn thing.I literally paused the screen,pointed and had a mini celebration because I believe it's the part responsible for this intermittent stalling issue that has made my 84' AMC Eagle undriveable
The ICM box is by the battery on the Eagle. I have an 86 Eagle but I’m going to try fixing the stepper motor & choke before giving up and bypassing things.
+Jmac Customs In the summer I used slow but when it was colder I used fast - that answer didn't help much I guess LOL - If you go to a bit faster hardener you will develop a few less runs but it is harder the hammer the clear. If you are going to buff then it doesn't matter as much. I've used Medium until it got really hot out and shot it when cold but was a bit more careful extending the flash time.
I bet with a good cat, and muffler it will pass. could double up the cat for the test.lol if it would run... Just make sure the cat is warmed up good. All the tubes and valves for the emissions just controlled the heat and lean/rich on the carb. I'm sure on jeep.forums theres people that can instruct on how to tune to pass testing with the nut.bypass. Once I did the bypass my old junk carter hasn't been to bad. It will rev. to redline if you push it. I get 20mpg on the hyway now. Got 12 before. I have more prob.with sticky valves lately. I'm going to put a 4.0 head on mine when I get the dough.
+jeremy yeoman That's cool about the head - yeah usually I can get most old stuff to pass - Lean the crap out of it B/4 going. The smaller Weber carbs are easier to get passed than the 38's
Hey Dave, looking forward to the upcoming video on changing out the carb, I have an 87 Yj that runs pretty bad. I was thinking about the motorcraft upgrade carb from ebay. Are you going to change out that air intake as well?
Hey David! Great video man. I was wanted to ask you the other day if you knew something about the nutter bypass and you obviously do. I've heard that the MC2150 carb is a good option too.
+Milton Martinez Hey Milton ! Yes there are quite a few good options - none of them ae rebuilding the Carter BBD - hahaha Ill be doing the bypass in a video coming soon :)
Out here in Illinois you only need emissions on 1996 and newer. But new cars don't have to be tested till they are 4years old, I'm building a 1995 GeoTracker and dropping the tracker body on a 1983 Chevy blazer frame, and hopefully it will be street legal, haha
+tekkman boxmb Yeah I think post 75 have to be emission tested or something like that unless you get antique plates which dont have to be tested but legally can only be driven on weekends :)
I have an 89 YJ 4.2L, years of dealing with the crappy Carter carb from day 1. Finally pulled it a few years back, put on an MC2150 and tore out miles of vacuum hoses and electronic crap. Now when I open the hood I can see the motor. Starts right up and idles fine. Its the best mod I have done to the Jeep. No emissions where I live so I don't have to worry about failing anything. I had the nutter also but ran into some electrical issues a few months back. I had an intermittent wire going to my coil and thought it was ECM related so i reversed the nutter to stock and never changed it back. Have not noticed any change in the idle/drive so all is well. Been running this setup for 4 years now.
+cesare68FL Super cool - thanks for the info - we will see if the weber runs that well :)
i had the same problem with my 1990 jeep yj 4.2L and , i installed a WEBER 38/38 and also a new DUI distributor now is working fine
Awesome !!!
Brought back memories of my 1990 wrangler. Damn I wish I wouldn’t have gotten rid of it
Ashton - get you another one - LOL
Thank you so much for this video!!! I did what you did... disconnected the hose from the fuel filter ..tried starting...NO gas came out.
Helped me to diagnose bad fuel pump.
Took 30min total to fix (part store included-17$).
1981 CJ8
Lindsay Freeman how do i have a 1983 cj5 and yours is a cj8 in 1981
@@AJ123123ify because the CJ5 1955-1983 and the CJ8 is 1981-1985. They didn’t just make one model at a time all the time. 🤷🏻♀️
After i replaced my carb on my 1983 cj5 4.2l it ran fine just had issues with pressing gass too hard and it not going it would bog then speed up after
I put the same weber carb on my 1987 YJ back in the 90s and never had a issue its a great carb.
+Ron Stark Thanks Ron ! Did you do the bypass also?
I'd be interested in the old carb. Up here in Indiana they don't emissions test. I have an 87 4.2 with that carb, but older and junkier. lol I have done the "Nutter Bypass'' which just bypasses the emissions, tricking the cpu part of the carb and junk. It runs perfect after and way more power.
1:44 thanks for the shiver down my spine with that nails on chalkboard lol
The issue I’m having with my 87 is flooding... it starts and runs fine but if you get going too quick on a bumpy road it floods out and dies...
THANK YOU. I hope this finally fixes my f**** problem with my Jeep. Had it for a year now and it hasn't ran right since I got it. And you have a new subscriber, sir. Your videos are GOLD. Hahah :'P
The issue I have with my 1984 cj7 is if I let it sit for three days I have to pour gas down the carb to get it to start
Certainly a fuel issue - the fuel bowl is empty eh ?
@@RedneckGarage i plan on droppin a 1980 4.2 258 in a 1997 Tj ....going back to carburetor....whats your thoughts....
i have a bbd on my old plymouth 318 and i have a vent tube ontop of carb but it is plugged cause mya car dont have charcoal canister , is it ok that i plug the vent tube or should i just unplug it and leave it open or run a hose to a the oil breather cap .....also will unplugging the vent tube help with vapor lock ..i get vapor lock only on hot days which is like 10 days a year here in canada ...and i do not have a return line to the tank
I just got a 1986 with a Weber 2 barrel carb bad thing is it's only the 4 cylinder Motor the 2.8 and been trying to figire out what to do it runs everything ot came from 3400 feet and now is running in 8000 feet is it necessary to get it re jetted?
Hi I have a friend and his YJ is giving him a giant pain in the ass. It's never really run or started well - which I attributed to the crap Carter carb it can with. Now, however, when it's warmed up and I'm driving down the road, the choke closes and it dies. What I've researched says is a bad carb thermostat. I ordered a new one, but it looks like the original is riveted to the carb body and can't be removed?!? No screws. Wtf. Not sure where to go from here. Any advice would be much appreciated.
Thank you,
I have a 76 cj5 with a 258. It needs a new cArb. What's your recommendation on what cArb is best for that motor
Hey Dave, I've got a question for you if you're still around here on RUclips. I have an 86 cj7, it's got the 2.5L engine on it. All the pictures I could find tell me that the carb that is on it isn't the factory carb, I believe it is a YFA carb. However it still has all the electronics on it. I have no way of testing whether the jeep runs or not because the fuel tank isn't mounted up and I don't have a sending unit, or even any of the mounts for the fuel tank. I plan on doing the nutter bypass to get rid of all the emissions crap (i live in Indiana, no emissions here so no worries) but basically I need to know, what is a good affordable carb I can throw on this thing that will work? Could I put one on there from a pre 1983 2.5? Hopefully someone can help because I want to get this thing running by the time it gets warm outside
Great vid for the coming carb swap. Looking forward to it
+Rusty “rustyglovebox” Glovebox Thanks Rusty !
I've been there. After having a rebuilt (or was it new?) unit installed on mine a couple of years ago the Jeep has run pretty well other than running rich on start up and one of the two weird red lights in the center of the dashboard flashing and latter going solid (WTH?). Those computer controlled carbs are a mess to troubleshoot. I am looking forward to seeing that nutter bypass done and how it runs afterwards. Hoping your sister-in-law has continued to do better.
+melodicdreamer72 Thanks so much Bro Kris is continuing to slowly improve and is working hard on her PT. As far as the carb - did you get a rebuilt factory style replacement carb ?
Hi Dave...been a while since I was on YT... I brought the Jeep in to a shop when I first got it - was worn out to the point I didn't know where to start with it - mostly considering the '90 YJ emissions garbage. Anyways, they installed a new carburetor that was a supposed to be a direct replacement for the old Carter. If I knew then what I knew now ...you know how that goes. Bottom line though, if it weren't for it getting about 11 miles to the gallon, I would say she runs pretty good. I'll have to get some pointers on how you go about finding the vacuum leaks in the next video - I figure there must be a central point at which the smoke can be administered, but I haven't found it.
Sometimes old is better. Your in TN? Me too. North of Cookeville.
+wyattoneable Cool Wyatt ! Im in Franklin
I have an '88 YJ with the 4.2, what's your thoughts on the Motorcraft 2100 / 2150 conversions vs the Weber? Look forward to seeing the swap on Devin's CJ. 👍
think that one works fine also - the weber comes as a kit so thats why I chose it :) amzn.to/1pLeiGh
Look forward to seeing the swap.
+STEVE ROB Me too ! Devin has been driven crazy by the crappy Carb
Digging the CJ series from the start! My dad had a 1980 CJ7, probably the reason I love Jeeps so much. I had a friend with an early YJ with similar issues too, darn thing stalled all the time. I'm pretty sure he ended up doing what you're about to do.
+UndergroundTrev Hopefully it will go smmmooottthhh LOL
Any vehicle older than 1995 emissions are waived in the state of Illinois.
+Ron Stark Ahhh - nice.
The 84-86 computerized carbs were absolutely a POS. My 86 CJ7 stalled every time I made a right hand turn. I swapped the carbs with several others of the same model and I did a couple onboard computer swaps. No dice. One day I pulled the computer harness from the carb and it actually ran better and didn't stall on right hand turns for about a week. In reality, the Jeep shouldn't have run once the harness was pulled! Then it started acting up again. Solution: 1978 AMC Eagle carb swap and manual choke setup and disconnected all the pollution control crap. It hasn't stalled since and I've owned it for 28yrs now. My 84 CJ7 would stall when it rained. Same carb. Throw those carbs out immediately. Even if it's working properly. Get RID OF IT. My most recent purchase. A 1980 CJ5, the carb (non computerized) was bastardized by a previous owner and it idles almost like the Jeep in the video. I'm not even going to deal with trying to make it right. My next step...Weber Carb Kit WK551 and the Holley 12-804 fuel pressure regulator, and new fuel pump. DUN DEAL!
6:28 Dude I've been looking where that f*cking ICM box is for around 3 months now and couldn't find a damn thing.I literally paused the screen,pointed and had a mini celebration because I believe it's the part responsible for this intermittent stalling issue that has made my 84' AMC Eagle undriveable
The ICM box is by the battery on the Eagle. I have an 86 Eagle but I’m going to try fixing the stepper motor & choke before giving up and bypassing things.
Hey Dave! just a question, what clear coat did you use on your jeep build? did you use a standard hardener or a slow/fast?
+Jmac Customs In the summer I used slow but when it was colder I used fast - that answer didn't help much I guess LOL - If you go to a bit faster hardener you will develop a few less runs but it is harder the hammer the clear. If you are going to buff then it doesn't matter as much. I've used Medium until it got really hot out and shot it when cold but was a bit more careful extending the flash time.
I bet with a good cat, and muffler it will pass. could double up the cat for the test.lol if it would run... Just make sure the cat is warmed up good. All the tubes and valves for the emissions just controlled the heat and lean/rich on the carb. I'm sure on jeep.forums theres people that can instruct on how to tune to pass testing with the nut.bypass. Once I did the bypass my old junk carter hasn't been to bad. It will rev. to redline if you push it. I get 20mpg on the hyway now. Got 12 before. I have more prob.with sticky valves lately. I'm going to put a 4.0 head on mine when I get the dough.
+jeremy yeoman That's cool about the head - yeah usually I can get most old stuff to pass - Lean the crap out of it B/4 going. The smaller Weber carbs are easier to get passed than the 38's
Hey Dave, looking forward to the upcoming video on changing out the carb, I have an 87 Yj that runs pretty bad. I was thinking about the motorcraft upgrade carb from ebay. Are you going to change out that air intake as well?
+Jonathan Knowsley No the weber has an air cleaner assembly included - amzn.to/1pLeiGh
Hey David! Great video man. I was wanted to ask you the other day if you knew something about the nutter bypass and you obviously do. I've heard that the MC2150 carb is a good option too.
+Milton Martinez Hey Milton ! Yes there are quite a few good options - none of them ae rebuilding the Carter BBD - hahaha Ill be doing the bypass in a video coming soon :)
You have power steering,,, I dont......but wow look at all them vacuum hoses..
You have to do emissions on a 80s jeep?....
Out here in Illinois you only need emissions on 1996 and newer. But new cars don't have to be tested till they are 4years old, I'm building a 1995 GeoTracker and dropping the tracker body on a 1983 Chevy blazer frame, and hopefully it will be street legal, haha
+tekkman boxmb Yeah I think post 75 have to be emission tested or something like that unless you get antique plates which dont have to be tested but legally can only be driven on weekends :)
sounds like a V8 swap would make it run smooth to me
+Bullshitkorner hahaha yeah that's just what I was planning to do for a friend while mine is not running - not - hahahaha
had no problems , but they are different jeeps.
+Ron Stark Thanks Ron :)
hay David now all you have to do is find time for a shave and a haircut between all your projects
+DriveShaft Drew Exactly Drew -hahaha
No bypass,
+Ron Stark So the computer is still adjusting things ? Just wondering if not doing the bypass affects anything.