Why does the throttle of a gasoline generator fluctuate between large and small?
2 Answers
Gasoline generator throttle fluctuations between large and small are mainly related to the fuel injection volume from the injector, the atomization effect of gasoline, and the mixing ratio with air. Below are the relevant explanations: 1. Explanation one: Gasoline generators are typically composed of components such as the stator, rotor, end cover, and bearings. 2. Explanation two: New generators should avoid sudden load increases or high-speed operation as much as possible. It is advisable to use matched lubricating oil, and lubricating oils of different brands should not be mixed. Lubricating oils contain various additives, and mixing different brands can degrade lubrication performance, leading to abnormal wear of moving parts.
I've repaired many gasoline generators, and fluctuating throttle is quite common, mainly stemming from fuel system or governor issues. If the fuel line is clogged or has air leaks, the engine speed drops due to insufficient fuel supply; cleaning the fuel filter often solves this. Alternatively, excessive carbon buildup in the carburetor can cause uneven fuel injection and fluctuations. Another reason is worn-out spark plugs failing to ignite properly—simply replacing them usually fixes it. A loose governor spring can also lead to loss of control, especially in older models. I always start by checking if the fuel is clean (avoid stale fuel) and then adjust the governor linkage with a screwdriver. Regular maintenance, like running the engine idle for a few minutes monthly to clear residues, can prevent 90% of failures. Unstable operation wastes fuel and damages the engine—don’t delay repairs to avoid costly fixes later.
