Técnica: Carburetor Idle Adjustment
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Carburetor's were used in vehicles up until around 1990 to mix air and fuel for combustion in the cyclinders. Making sure that they are functioning equally maximizes engine efficiency.
- Autor: Noah
- Tiempo estimado: 15 minutos
- Dificultad: Fácil
In this guide, you will be instructed on how to adjust and synchronize the output of the two carburetors.
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Paso 1 — Carburetor Idle Adjustment ¶
Use a 3/8 socket wrench to loosen the retaining bolts on the air cleaner.
Rotate the air cleaner so that the throats of both carburetors are clear. Now you will be able to adjust them.
Start the engine
Paso 2 ¶
Allow time for the engine to warm up completely
Attach carburetor synchronization tool to one of the carburetors
Observe the relative reading, and remember it.
This reading is a measurement of the airflow speed
Paso 3 ¶
Set the synchronization device on the other carburetor.
Using a Flathead screw-driver, twist the idle speed screw in to raise the flow, and out to lower it.
Recheck both carburetors and adjust as needed to get the flow as equal as possible.
Paso 4 ¶
Now, the idle mixture screws must be adjusted.
Turn both screws in, or out an 1/8 or a turn at a time until the fastest idle speed is achieved.
Paso 5 ¶
Finally, raise or lower the idle speed screws until the idle speed is about 550 RPM
Rotate the aircleaner back to its original position, and re-tighten the 3/8 nuts on the retainers