* Low fuel level: If the fuel level is too low, the engine will not be able to get the fuel it needs to run properly, which can cause it to surge.
* Dirty fuel filter: A dirty fuel filter can restrict the flow of fuel to the engine, which can also cause it to surge.
* Incorrectly adjusted carburetor: If the carburetor is not adjusted properly, the engine will not get the right mixture of air and fuel, which can cause it to surge.
* Worn spark plug: A worn spark plug can cause the engine to misfire, which can also lead to surging.
* Sticking valves: Sticking valves can prevent the engine from getting the proper amount of air and fuel, which can cause it to surge.
If your Briggs and Stratton engine model 28M707 is surging, it is important to troubleshoot the problem and make the necessary repairs. Otherwise, the engine could become damaged and you could be stranded without power.
