What would cause a lawn mower engine to surge?

Problems in the Fuel System Check and clean the vent. Surging is also caused by water that got into the fuel. A mower left in a heavy rain or condensation on a hot summer day can choke the engine. Empty the gas tank, properly dispose of the old fuel and try a fresh batch of gasoline.

What causes an engine to surge?

If an engine is not getting enough fuel (this is called “running lean”), due to fuel pressure (regulated by the fuel pump and regulator), restricted fuel injectors, a vacuum leak or really anything that throws off the fuel mixture going in to the engine, this can cause the surge.

What can cause idle surge?

What does the governor do on a Briggs and Stratton engine?

The governor system is like a cruise control system. It maintains the speed of your lawn mower or outdoor power products. When Briggs & Stratton governors are adjusted properly, they keep your speed steady regardless of engine load – the amount of work the engine must perform.

What causes an engine to hunt and surge?

Why is my Briggs and Stratton riding mower surging?

OHV v Twin engine in my riding mower. It has had a surging problem since I purchased it and it is getting worse. I have done some reading on it and Briggs says it is a bit normal and that it should have gone away after several tanks of fuel or full throttle operation; it’s 5 years later and I can’t stand it any more.

What kind of engine does a Briggs and Stratton lawn mower have?

Some engine types are famous for surging, the Briggs & Stratton 450, 500 and 550 series engines are fitted with a metal fuel tank and priming bulb style carburettor. If you have one of these type engines and it’s surging – You’re in the right place.

What makes a Honda lawn mower engine surging?

Honda and Kohler use a relatively easy to access idle jet that clogs up and causes surging. The Kohler is easier to access than the Honda. Briggs have fitted a plastic carburetor to a range of engines which also clog up and cause surging. All of these carburetors can be repaired by cleaning. It’s all covered in the video library.

What causes lawn mower engine to surge at end of season?

1) Bad Fuel. The number one cause of mower engine surge is using gasoline that is old or contaminated – perhaps by water condensation, usually as a result of leaving gas in the mower over the winter. Many homeowners forget or choose not to drain the gas from their mower’s tank at the end of each season.