Here's how to find and adjust the mixture screws on your carburetor.
Note that metering-block style carbs such as Holley and Demon more often have one or 2 mixture screws in each metering block depending on the number of venturi. Also those may not be located at the bottom of the carb as in factory carburetors.
How a carburetor works, schemes and explanations
This video explains, not in too much detail, how a 28mm Walbro diaphragm
carburetor works (using mainly schemes to point out what happens inside).
It explains what occurs at the venturi, what the butterfly valve is for,
how the needle doses the amount of fuel, and how does the diaphragm slide
How To Adjust The Accelerator Pump On Holley Carburetors
How-to adjust the accelerator pump on Holley carburetors to avoid stumbling
and hesitation upon acceleration. Tips include: How to check for the
clearance between the accelerator pump diaphragm arm & operating lever;
how-to select the correct accelerator pump nozzle size, and accelerator
pump cam selection and installation. Additional information can be found on
How to adjust Quadrajet/Dualjet fast idle
Quadrajet/Dualjet Rochesters have a fast idle adjustment screw that is
separate from the base idle screw.
Here's how to locate it.
Note: Ever since Charter "fixed" my internet and cable after the lightning
strike, it hasn't worked right. Go figure. So, if you see this posted then
I was finally successful in getting a video uploaded.
Auto Repair & Maintenance : How to Adjust Carburetors
Idle speed and idle mixture are the two most common adjustments made to
carburetors, and these adjustments start by warming up the vehicle to full
engine-operating temperature. Find out how to perform a lean-drop
adjustment with help from an ASE-certified master automobile technician in
this free video on carburetors.
Expert: Clark Mason
Bio: Clark Mason is an ASE-certified master automobile technician.
Filmmaker: Christian Munoz-Donoso
Clean a Carburetor, Without Rebuilding it - This Really Works
Do you have a car or truck with a carburetor. Do you think you need a tune
up. Want a cheep fix to make it run better.
Have you noticed that on youtube that other videos show you how to clean
the carburetor choke, but that does not clean anything inside the
carburetor. So the other videos don't really help you make your car run
How to clean a carburetor cheaply and without having to remove it from the
engine. This engine has the carter YFA single barrel carburetor on the Ford
300 inline 6. A very good motor but at its age of 240,000 miles it is hard
to pass a smog check. To help it pass I spray carb cleaner into the fuel
bowl via the fuel bowl vent and this cleans the carb from the inside and
the internal parts. This video will show you a handy trick to pass a smog
check, and keep your vehicle running smooth.
automóvil carburador limpio automóvel автомобиль
How To Adjust The Idle Mixture Screws On Holley Carburetors
Tips on adjusting the idle mixture on Holley carburetors, using a simple
vacuum gauge. Proper idle mixture adjustments can prevent bogging,
hesitation, rough idle, backfire, stalling and hard starting. Additional
information can be found on Holley's Blog:
How Does A Carburetor Work? Engine Diagnostics 101 Go Kart Guru
Trouble shooting engines can be very frustrating especially if you don't
know anything about carburetors. This course shows how the carburetor
works. It shows you why it works and some of the other functions of a
carb. Visit Go Kart Guru.com for more details.
How to debog your Quadrajet part 3
In the first two videos we looked at operational theory of the Quadrajet.
In this episode we'll explore a couple mistakes the home mechanic often
makes in an effort to improve the performance of this unit.