This fuel will also slowly drain past the piston rings, diluting the oil in the crank case. If this happens frequently, fuel will overfill the float chamber, flood down the throat of the carburetor, and flow into the cylinder through the open intake valve.įuel in the cylinder can flood the combustion chamber above the piston, creating hydraulic lock, preventing the engine from turning. Reduced pressure against the needle valve allows pressurized fuel from the fuel tank to pass through the valve. Why does the engine flood?Īny time vibration causes the carburetor float to drop in the float chamber, pressure is reduced against the needle valve.

Hydraulic lock, when incompressible liquid causes engine damage or failure.īest practice for small gas engines – ensure equipment is on level ground, and the fuel valve is shut off when re-fueling and when equipment is not in use.

Dilution, when fuel goes past piston rings and mixes with oil, causing engine damage.

Engine flood, causing downtime waiting for the flood to clear.

This can be easy to forget, especially when using remote controls.įuel shut-off becomes important when moving equipment as vibration can cause the carburetor needle valve to move allowing fuel to trickle into the carburetor, the float chamber and down the intake valve. Most small gas engines have a fuel valve that should be shut off by when the engine is not in use. Did you remember to shut off your fuel valve? In this article we’ll explain why you should. You just finished a job using your gas drive air compressor and you’re getting ready to drive to your next job.

Electric Air Compressors For Mobile OEM Applications.

UNDERHOOD™ 40 Air Compressors – Van Series.

UNDERHOOD™ 40 Air Compressors – Truck Series.Multifunction Power System – Your Power, Your Choice.

Compressor-Generator-Welder Power System.Direct-Transmission Mounted Multi-Power Systems.Gas Powered Air Compressors & Air Compressor/Generators.Why The Fuel Valve Is Important on Small Gas Engines | VMAC

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