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Apr 02, 2023 - 07:31 PM
Hi there,
There are several things you should keep in mind when switching from a fuel-injection system to a carburetor on your 1991 Dodge W150 5.2L. Here are some key points to consider:
- Install a carburetor that is appropriate for your engine. The carburetor needs to be sized correctly for the displacement of your engine, the type of camshaft, and other variables that will affect fuel delivery. You may want to consult with a carburetor specialist to help you select the right model.
- Replace the fuel pump. Carburetors require a higher fuel pressure than fuel injection systems, so you'll need to install a fuel pump that is designed for carburetor use.
- Install a fuel pressure regulator. A regulator will ensure that the fuel pressure delivered to the carburetor is at the appropriate level.
- Change the intake manifold. Since carburetors are not as sensitive to intake air temperature as fuel injection systems, you may want to replace your existing intake manifold with one that is designed for carburetor use. This will also allow you to install a traditional air cleaner assembly.
- Add a distributor with mechanical advance. With a carburetor, the ignition timing needs to be adjusted according to the engine's rpm. A distributor with mechanical advance will provide the proper timing advance as the engine speed increases.
- Replace the throttle linkage. You will need to install a carburetor-specific throttle linkage, as the original throttle linkage will not work with a carburetor.
- Adjust the carburetor. Once everything is installed, you'll need to adjust the carburetor to ensure that the fuel mixture is correct. This will require some tuning, which may involve changing jets, adjusting the air/fuel mixture screws, and setting the idle speed.
By following these steps, you can successfully convert your 1991 Dodge W150 5.2L from a fuel-injection system to a carburetor system. However, keep in mind that carburetors can be less fuel-efficient than fuel injection systems, so you may want to consider this before making the switch.
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