How To Adjust A Carburetor On Your Car
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- Опубліковано 30 тра 2015
- Scotty Kilmer, auto mechanic for the last 47 years, shows how to adjust a carburetor. All you need is a screwdriver and a hand, adjust a carburetor is not as hard as you might think.
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Things I used in this video:
1. Screwdriver set: amzn.to/2jaHIfP
2. Common Sense
3. 4k Camera: amzn.to/2hZ4AxX
4. Mini Microphone: amzn.to/2newgV9
5. My computer for editing / uploading: amzn.to/2i2sKYz
6. Video editing software: amzn.to/2jv5Fhf
7. Thumbnail software: amzn.to/2k7tz6C
🛠Check out my Garage to see what I use every day and highly recommend:
www.amazon.com/shop/scottykilmer
❗️Check out the Scotty store:
goo.gl/RwhRGU
👉Follow me on Instagram for the latest news, funnies, and exclusive info / pics:
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I have a 1985 k1500 I don't know the carb I have on it its a 305 and I am getting bad mpg and I never did before but I can smell the gas when I decelerate and it started to sputter when I'm braking and when I turn it on it blows black smoke what do you think this could be
Ashley Marrone running rich
Scotty Kilmer, good vid but you left out how to check vacuum to and adjust if needed, the primary and secondary choke pull offs as well as the fine tune adjustment of the choke mechanism and choke step down idle speeds.
Ashley Marrone if it's blowing black smoke, you are burning lots of fuel. Try leaning it out.
Hi Scotty, I have an 1987 Toyota starlet. (engine is 2e-c) Which is difficult to start when it is cold. I suspect this is the automatic choke that failed. How can I fix it?
Scotty Kilmer is literally keeping my 86 Firebird Trans Am alive
He’s keeping my 90 Camaro alive
same w the 82 square body
89 ta here
After a few days I'm here for my 88 firebird 🤷
It’s crazy because I’m literally watching this video to try to get my 86 firebird I just got started
Scotty you’re a F’n life saver man, I’ve been tuning and adjusting my carburetor for months now man. Thank you for your service
It took you months to turn three screws?
They are not the easiest things to adjust. Good to know you’re such a smarty with carbs.
Heh, I remember doing this back in auto school and it was actually kinda fun and educational. The instructor had the engine plugged into a smog machine to read the gasses coming out and we had to adjust the carburetor so that the exhaust reach at or below state exhaust requirements.
Edelbrocks are easy to tune and maintain. Quadrajet not so much, but it's a gas saver. Great video!
Love this guys editing sometimes lol just cuts off
+Greig300 maybe it was the camera guy, didn't like scotty talkin' smack about new cars hgahah "CUT!"
ThisISETHANBRADBERRY! New cars will never give the same feel as the originals. Dodge is bringing back the barracudas in 2020, but if you look at the assumed photos, it's nothing like the cars that cruised with style through the 70s and 80s.
Watching your videos helped me fix my old truck. Great stuff!
Thank you so much! My car got repossessed recently and my only means of transportation to work is my 44 year old tank of a car. You have no idea how much I appreciate this!
This is a video on how to adjust the idle mixture and idle RPM. How about making a video on how to properly jet a carb, adjust the accelerator pump, and set the choke. Most peop leave no idea how to properly set up a carb for a new combination.
Thanks, Chris
shadowdog500 theres plenty of vids on that. not really scotty's cup of tea. he does quick vids
also most factory carbs only let you adjust the idle mixture, idle speed, and choke.
well that's pretty easy. Mainly you have 3 jets on a carb and in general you can say. One is for idle, the middle one is for normal driving and the main one the big one is for full throttle.
What you need is time and various jets at hand. At first of course let the car warm up, and for the idler jet you simply let the car idle for a certain period and then check the colour of the sparkplug
For the middle jet, you go on the freeway and drive it for about 1 hour with about 50% throttle. Now you can go by the colour of the sparkplug if you want clean emissions and low fuel consumption or you make several runs with different jets and find out when it got the highest speed.
The same should be done for the maine jet although a richer mixture is preferable
14725800369 instructions unclear. My carb is now lying on the freeway
Thanks so much for this. My 66' C10 was stumbling at idle it was so rich. Its much much better now
Loved your video. Just bought a 66 mustang and I'm feeling it is time to tune the carb. Maybe even upgrade. I bought it about a week ago and I'm just getting started. I plan on getting a longer cam, headers, better hood with a scoop, and much more, including some major cosmetics. I hope by the end of the year, I will have a maroon and black pony with a mean engine to walk the walk. But I am glad I found your video to give me the official start to the restoration of my baddest dreams. God bless buddy. Give that stingray everything it wants. Lots of road and serious torque to leave its signature.
Really helps to use a vacuum gauge. Get it idling as low as it will without jerking around, plug the gauge into a fitting on the intake (manifold vacuum), then adjust mixture screws .5 turn outwards at a time for each (.5 on left, .5 on right, left, right, etc) until highest vacuum reading, and then adjust idle to 700-800rpm in park. Too high of idle and the car will slam into gear. Anymore than 900rpm and most older carbureted cars with their stock 1100-1500 stall converters will start to engage. Thats why it goes into gear really hard. Manual cars idle speed can be a bit higher or lower, measured in neutral, parkng brake set and wheels chocked. Find what your engine likes.
Good advice
that is if the car is automatic, manual transmission cars don't engage anything
I really love your videos! They're perfect! Funny and filled with instructions and info. Thanks for doing them! :D
Good to see the Vette back!
Thank you for this video, after getting turned down by several “licensed mechanics” who apparently don’t work on carburetors, I got my 72 Jeep commando purring just right! Whatever anyone does, don’t come to Puerto Rico lmao!
Back when it was easy to adjust and fix anything.... Man I wish cars today could be easily fixed without needing a scan tool computer.
mclaine33 Do you also wish modern cars had worse fuel economy, didn't last as long, could be affected by small changes in fuel makeup, required more maintenance, and so on? I think its a fair trade off.
Gerberbaby922 Yeah fuel economy sucked but gas was very cheap. It isn't good for the environment though. Didn't last as long? Idk what you're talking about. I feel like many older cars were better build than todays cheapo junk parts that fall off or break (like bumpers made of plastic). More maintenance, yes sometimes, depending how often you drove. Overall it would be nice if cars today can be built just as well as older cars were. A really great example that I can say would be the Tesla Model S. That thing is very well engineered and I'm sure in the future that will become a "collectible or classic" too.
Gerberbaby922 What about SEFI & EEC, but pre OBD?
Gotta 5.0 Windsor ('86 Colony Park) which uses half the fuel compared to my old '63 Impala: 283 with Edelbrock AFB.
Not entirely fair, since the Merc has a 4 spd with lock-up, but I feel the improvements in maintenance aren't that big anymore between a 1986 panther and a 2012 one, and according to the EPA their carbon footprint is equal...
The best of both worlds perhaps?
mclaine33 it was common to get valve jobs done, idk about every 30,000. It was rare to get 200,000 miles out of a car. Also, the metal rusted easily.
mclaine33 man I wish cars still had 5.7 liters of displacement and only put out 170 horses lol. i drive an old carbed 350 sometimes but i have to admit that modern cars with vvt, efi, forced induction ect are pretty amazing. the new eco in my mustanf is putting out 390 ob ft and 335 hp from only 2.3 liters !!! im notbgetting the estimated epa mpg but thats probably because its so much fun to drive
Wow!! You went waaaaay back Scotty. I can't remember the last time I've seen someone adjust a carburetor. The ones on my 80's GM's had caps over the mixture screws and couldn't even be adjusted.
by the 80s they had sensors and computers that would adjust them automatically
Thank you, your videos are so helpful in my adventure with owning a 1990 jeep
you are a star, you make it as simple as possible as if you live in our heads.
Great help for me. Thanks for posting this. 🇨🇦👍🏼
I just bought a 1972 datsun 521 so this video really helped!!!🙏🏽
I love how you start on these massive rants but you edit it out.
Right on! Thank you for making it a breeze!
Your videos are great I don’t know much when it comes to cars wish I would of payed more attention to my dad growing up but your videos help a lot haha.
you are a professional mr.scott.
good job.
Peace.
Hi Scotty, glad to see that you started posting video after the great flood. Hope you and your family are doing OK ?
definitely need more videos like this I have a 85 Chevrolet celebrity 2.8 2 barrel carburetor but it's a Rochester carb I wish u had video of something like that or close or just more videos of carburetor vehicles it would help. And love all of your videos been subscribed and watching for a long time your videos have really helped
I have almost the exact same car and was gonna waste almost 100 $ to get the carburetor adjusted now all I need to do is use a screwdriver thank you so much Scotty Kilmer you saved the day for me 👍
Christian Commanda
That's why I love my 87 dodge ram and 80 mustang had to do my first mechanical fuel pump on my truck last winter was under 20 bucks and under 30 minutes to change
Scotty, you're the man!
Thanks Scotty. You've helped me a lot with my Saturn SLs, my Scout IIs, my Plymouth Acclaim and my girlfriend's Mitsubishi Montero. Living proof that you CAN fix stupid:-)
I have to admit that was a fast simple video on Edlebrock carburetors, My 69 Mustang has a Holley it looks pretty different
Now do a V12 with 6 double Webers. That's where the fun begins!
You sir are a live saver
Kilmer is a Superstar!
thanks for all your great videos wish you were my mechanic
Hey Scotty, been watching your videos for some time, great work by the way, and i was wondering if you have or could do a carburetor cleaning video, I have a 1994 nissan sentra carburated, and I'm not sure if it needs cleaning. Keep up the good work.
you the man Scotty, thanks :D
Thanks sir. Very helpful.
Thx;everything you stated worked!!!
Hey Scott !! Could you possibly do a video on possible causes of a misfire in your system?
I had a 750cfm double pumper Holley on my bb 440 cu in with a 280 crane cam. I just Use a Vacuum/ pressure gauge to tune it. Ignition Timing has to be checked first before you tune the carburetor.
Thanks for info in this video...its useful
Doing this tomorrow on my 68 coupes brand new Rochester quadrajet. Just waiting on the divorced choke for my edelbrock manifold.
That was easy... I don’t think I’ll ever see a carbureted car but if I do, now I’ll know how to tune it up!
Thx a lot mate! Big help!
love your videos +scottykilmer
thank you man this rlly helps
Scotty for president 2020
Good luck, you are a very good person
Wow Actually I am from Sri Lanka and have a old Mitsubishi Lancer. Tried from many garages but no one can fix it for better tuning. But with your video I got my maximum level of fuel consumption. Thanks so much. Also if you have the chance do a video for ajusting Dialpham to have minimum sound from engine and also for maximum plug distribution. Again thank you very much 😈😎
One of my favorite mechanics 🪛🧰
You literally are saving me 1000 of dollars! Thxxx😭
I turn the mixture out/rich until it reaches the steady high rpm.
Then turn it back in slowly until the speed drops 50 rpm.
Readjust idle speed and repeat on other side.
The lean drop method will yield better results if you go offroad a lot or otherwise idle around in low gear like 4 wheeling.
What about the choke, metering rods, springs? I like the ease of adjusting the edelbrock carbs compared to holley
Would you be able to do a video on how one uses a vacuum gauge or does this work best
Go Scotty go!!!
wow thanks a lot! that really helped
I learned the best way to adjust the carb is to attach a vacuum gauge to manifold vacuum, and to ALWAYS make sure the fuel idle mixture screws are adjusted evenly 1/4-1/8 turns at a time, until the best vacuum is found. You just seemed to turn the screws willy nilly
Hey Scotty , big fan here. Can you please make a video on how to clean the carburator? My car is on ventilator
Love having a carb. So easy to mess with
As a car mechanic i approve! :D
Not but seriously I do like injector engines as well.
thanks for all he help and ideals, question for you - i have a 1980 corvette with that same carburetor - cant keep ideal very well - i had never noticed if there was a spring or something on the other side for the choke? there are a couple holes over there that seems might be to keep in place or adjust ?? wondering if had any ideals on that. Thanks again
You are legendary 💪
Scotty! Can u make a playlist strictly for Old school? 💯 🙏
So, the final step is adjusting the idling. How does this relate to adjusting the timing and turning the distributor left or right? Which one is tuned/completed first?
I just started tinkering with the carb on my VW. i think you have to have a good ear for these things .-.
Hello scotty, congratulations for the videos, how i can fix a carburetor that stay in hi rpm's in idle
And remember, since at least 1982 automakers such as GM went mostly to computer-controlled carbs with mapped ignition timing. You can only adjust the idle speed on most OEM computer carbs. For better performance, people had to change the intake manifold, fuel jetting and sometimes the PCM. Because of growing fuel economy and emissions standards, engine performance was sacrificed majorly from 1973-1987. Of course, the old school performance aftermarket exists for those yearning for simplicity. Replace and burn rubber.
Scotty you need your own TV show!!
i rebuilt several carburetors in my time ! they are a lot easier to work on then fuel injection ! I had cars back in the 60s and 70s with carburetors started and ran better then cars today !
Lloyd Dailey tell that the emissions department
I never leave my mixture screws at highest idle. They are too close to a lean condition that way. For 45 years I have taught others to screw them out 1/4 to 1/2 turn out from high idle to allow for any contaminants that WILL get in the idle circuit. This of course is not how the EPA would like it but it allows more time until they need to be readjusted. The factory settings (in the 1970's)were slightly in from high idle and of course demanded readjustment in no time. I am surprised that others have not taken up the slightly rich practice as it works better for a longer time. Highest idle is not necessarily "perfect" as some would say if you have to keep readjusting them. In some states that unfortunately have smog tests I suppose you have to do it their way but not where I live. I have several cars with two four barrel carbs. and rarely have to adjust them.
Hi Scotty, I have corolla 1.3 of 1998 with carburettor engine. My engine rpm raises high on AC even after lowering the screw
These types of cars (carburated cars) is what Scotty seems to know more about than any other kind of cars
Thx Scotty 💥👍🏻💥👍🏻
Finally, I get to see where the stingray came into play.
Ok so I've got this 82 corolla, it rattles a bit like a diesel under load or when going up hills but when you pull the choke out, the rattle stops completely and it's nice & quiet. Plus this rattling thing only happens when it's fully warmed up.
A great video, Scotty, I have a question, I am about to buy a buick with a 455 engine with an edlebrock and and at cold start it is has a hunting idle, also when you hit the gas it does not pick up well, seems like it is out of power. This information might be a little general but do you have any idea what might be the problem? It it just a matter of tuning the carb or is it a more serious problem? What might be the steps to undertake? Greetings from Holland
Thank you so much my truck runs like it’s brand new again.
Hi Thank you so much for this. I have a 1984 Mazda B2000 4 cyl, manual trans. I have a nikki carb on it and the old bat won't idle where I can do an adjustment. How to I combat this? Do I just fiddle with it until it idles and then adjust from there? I truly hope there's an easier way I'm not aware of
Are there always TWO air adjustment screws in every carburetor? I can only find one in my GA2 Nissan engine carburetor...
I just bought a mint 1989 Honda Accord LX that has an idle issue. Vacuum lines are all good. My next step is tuning the Carb. Could you give me some pointers?
I had to pause at 00:19
And appreciate that come up
Scotty, this is clearly the Corvette from your intro. Is it yours? Do you still have it? Do you drive it when it's warm outside? I just love the sound of these old, carburated V8 engines.... (we don't have many of those here in Europe)
Hey, Scotty! I just have a quick question! Maybe you or someone else here could answer!
I have an 85 Camaro, 305 v8. I'm tinkering with the screws right now, but i'm wondering what it should idle at when parked? I have it at about 1300 rpm when parked right now! Also, how exactly do i know when the idle rpm is "ideal"?
Thanks so much in advance!
Thanks
Thank you very much scotty precite that sorry for bad english
Scotty which is better for todays car carburator or efi
Thanks for the tip going to try it out on my 69 chevelle
Hey I like to see your videos, and I have a question a 1978 Chevy the engine stall when I press gas pedal
Hi Scotty. I have a 2004 Camry with what's to believe a clogged Catalytic converter. I thought it was my compressor but someone said the low humming sound was coming from the center near the down pipe instead of the belt side. I'm guessing the engine is barely breathing at this point. A month or two ago I had a check engine light come for my O2 sensor before the cat. I've seen the videos on cleaning the with detergent and lacquer but I purchased something from autozone supposedly cleaning the cat and sensors. But it's still humming. Also once I first crank everyday after hours of sitting a puff of white smoke comes out and gas mileage isn't the same. What are my options. I'm sure I need to replace my sensor. Do I replace it now or wait until I fix the cat issue. I've heard I have a great car and hopefully I can save it. Thanks Scotty for everything
I have a question about the air fuel mixture screw adjustment? If the screws are not adjusted properly can that be causing my gassy smelling exhaust fume problem?
Thanks scotty, my 650 holley on my 305 is 1600 at park or nuetral and 700 in drive.
Is this a good idle setting for this motor?
Should be at 900-1000 rpm’s
Scotty any tips for tuning 6 pack carbs?
One serious pet peeve of mine is bad wiring jobs, especially on classic cars like this, like those black wires @1:22 ....but anyway, good video, thanks for sharing Scotty
What about for different carburetors… don’t know witch one I have but want to adjust it also
Scotty ,if using a tachometer do you raise throttle screw above rpm setting then set air mixture .afterwards lower to proper rpm?
efi is good but what a pain to work on , carburators can be efficient if you know how to dial them in correctly, the Carter afb in my chrysler 413 averaged better fuel milage than my dodge ram 1500 with a 5.9
Hi Scotty!
Me again. I have a small issue with my 2001 Ford Falcon. Basically without going into too much detail, i was changing a faulty relay and had to move the WAC relay along with the horn relay to replace the horn relay. To my confusion, i mixed both relays (one being the faulty one and the other the original WAC relay) my question is what does the WAC relay do and how can i tell if its working or not. Thank you.
Scotty saving the day 5 years later
Just put a carb on my 66 falcon