The standard size carburettors used by Dodge are typically the two-barrel style with two adjusting screws to help fine-tune the carburetor. They have a simple design that allows you to make adjustments to your carb fairly easily. Adjusting your Dodge carb should only take about 30 minutes and will save you a lot of money in labor costs. It will also help you save some money by using less fuel, as your engine burns gas more efficiently because the carburetor is properly adjusted.
Step 1: how to set dodge 318 carburetor
Remove the air filter from the top of the Dodge carburetor by removing the wing nut from the air filter by hand and setting it aside. Locate the two adjusting screws on the lower cylinder of your carburetor. The upper adjustment screw is the idle mix screw, while the lower is the idle speed adjustment.
Step 2; how to tune a dodge 318 carburetor
Start the Dodge engine and let it idle until the engine warms up and the choke valve in the carburetor cylinder is open. Locate the vacuum hose that is connected to the vacuum outlet port on the carburetor barrel. Remove the vacuum hose and connect the tachometer to the vacuum outlet port.
Step 3; how to repair a dodge 318 carburetor
Turn the idle mix screw clockwise until you feel the screw stop at the bottom and then turn the screw counterclockwise two full 360-degree turns. Repeat this process with the idle adjusting screw.
Step 4: how to set a carburetor
Check the tachometer and read the rpm level. A properly adjusted idle speed should read about 850 rpm. Turn the idle speed adjusting screw with a screwdriver until the tachometer reads 850 rpm. Turn the idle mixture screw clockwise a quarter turn to tip the fuel mixture. Check the rpm again on the tachometer and turn the idle speed adjusting screw until it returns to 850.
Step 5: how to set a dodge dart 318 carburetor
Turn the idle mixture screw another quarter turn clockwise to continue tipping the fuel mixture. Check the tachometer and return it back to 850 rpm. Continue this process until the idle mixture is low enough that the engine almost stops, then turn the idle mixture screw 1/4 turn counterclockwise and check the tachometer. Adjust the idle screw once more to 850 rpm. Remove the tachometer from the vacuum outlet port and reconnect the vacuum hose. Replace the air filter on top of the carburetor and secure with the wing nut. Turn off the engine and remove your tools.
Warning, how to adjust the carburettor needles
- A hot engine can be extremely dangerous. Do not work on a hot engine if you can help it.