Problems ranging from erroneous idling speeds to overfilled fuel floats can affect the performance of your AVS carburetor. Yet, that does not mean you should despair; you can take a number of steps to diagnose the exact nature of the problem. As with all vehicular repairs, though, take the carburetor to an expert if you have doubts about your ability to solve the problem.
Instructions
- 1
Start the engine, but don't put any pressure on the gas pedal -- simply allow it to idle. The rpm (revs per minute) level should be close to 1,500; if it is notably higher or lower, adjust the idle speed screw located near the throttle linkage. Turing the screw to the left decreases the speed, while a turn to the right will make it run faster.
2Run the engine until the choke fully opens before inspecting the carburetor's primary chamber for any fuel dripping from the metering holes. This is an indication you have too high a level of fuel in the float bowl.
3Test the accelerator pump. A problem with this mechanism is usually signified by the engine running normally when idling -- around 1,500 rpm -- but suffering from hesitation when you try to accelerate.
4Check the fuel filter on your AVS carburetor if the engine is not receiving any fuel, but the carburetor otherwise appears to be in working order.
5Ensure the choke pull-down is functioning correctly. When the engine has just been started, the choke should be slightly open from its closed position. The engine running too rich combined with the choke being fully closed indicates a faulty choke pull-down.
