Why does my lawn mower surge when it gets hot?
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.
Why does my lawn mower surge?
The most common reason for a surging lawn mower engine is a blockage in the fuel supply, but there are other possibilities: Bad gas. Bad spark plug. Dirty / faulty carburetor.
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.
Why does my Briggs and Stratton lawn mower rev up and down?
If you find that your Briggs & Stratton mower engine revs up and down (surges), it may be likely that your lawnmower air filter is dirty. As noted previously, mower engines require air (oxygen) mixed with fuel, then spark, to ignite the mixture and run the lawnmower engine.
Why does my lawn mower not start when it’s too hot?
Reasons a Lawn Mower Won’t Start When Hot Now let us observe what actually happens to your lawn mower when it’s too hot, most likely it occurs due to a failing coil but there are other possibilities as well such as:- The plug of the mower may be faulty The engine may be flooded
What should I do if my lawn mower engine is surging?
Add fuel stabilizer to the gas tank (manufacturers recommended mix ratio) and top with a full tank of gas. Run the engine for 2 minutes to circulate the fresh gas. Check for mower engine surging. Tip: Briggs & Stratton recommends only using gas for small engines, with no more than 10% Ethanol, and that has a minimum 87 Octane rating.
What causes a lawn mower engine to surge?
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. A dirty or gummed up carburetor causes an engine to surge. If you feel comfortable working on carburetors, unbolt the bowl and clean it thoroughly.
If you find that your Briggs & Stratton mower engine revs up and down (surges), it may be likely that your lawnmower air filter is dirty. As noted previously, mower engines require air (oxygen) mixed with fuel, then spark, to ignite the mixture and run the lawnmower engine.
Why does my lawn mower shut down when it gets hot?
On lawn mowers, most vapor lock occurs through a dirty fuel tank cap. These caps have a small vent hole that allows the tank to maintain the proper pressure. Clean or replace the fuel cap. Problems in the supply of fuel and lubrication will cause an engine to shut down, especially as it starts heating up.
What should I do if my lawn mower engine goes bad?
Always check the fuel supply before each use. Dump out any gas older than 30 days, as it will go bad and clog up the fuel system with a sticky substance. If you used bad or old gas in the engine, the problem may require a thorough cleaning of the fuel tank, replacing the fuel filters and fuel hoses.