Lawn mower starts then dies. There are many reasons why your lawnmower might stall, but if you’re looking for a simple solution that won’t cost much, try checking for clogs in the fuel line.
If your mower starts well but dies after running 5-30 seconds, follow these instructions to clear or remove any obstruction blocking the flow of fuel.
After performing this fix our biggest piece of advice would be to periodically inspect your lawn mower engine for any kind of obstruction since it’s the most common reason behind engine stalling issues.
Lawn mower starts then dies
If your Lawn mower starts then dies, Check to see that the gas tank is full and try starting it again. If the engine runs for an exceptionally short time and then stops, clean or replace the spark plugs. Try draining some of the old gas from the gas tank and replacing it with fresh gas from a canister. Finally, if none of these steps will fix your problem, you may need a new carburetor or to replace the engine entirely.
Following you will find four quick steps on how to fix a gas-powered lawnmower when it has poor compression.
The choke is a flap that sucks air into the carburetor, making this process more effective when it’s cold outside. Your mower will start on the first try due to a richer fuel mixture in it.
It makes up for cold weather which is why you need a choke in the first place. Eventually, when the temperature goes up, you loosen your choke and take away air from your fuel mixture too.
If there’s a problem with opening or closing the choke, our customer service representatives will help you install one if needed on your machine!.
The carburetor might be blocked. A blocked carburetor is often caused by leaving fuel in the lawnmower for a long period of time.
Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall.
If this occurs, try cleaning it with carburetor cleaner and run other errands but if cleaning the carburetor is not effective, rebuild or replace it altogether.
Faulty Spark Plug
Inspect the spark plug for any signs of wear. If there are any cracks or an electrode is missing or completely damaged, you should consider replacing the spark plug.
To determine if it is defective, use a spark plug tester. You should see a strong spark between the tester’s two terminals when the engine is cranking.
If there is no spark, this indicates that the spark plug is defective and should be replaced.
Cleaning the Gas Bowl
The bowl of the carburetor collects dirt and moisture that sneaks past the filter. You can clean out this residue by loosening it at your gas source, cleaning the parts with soap-and-water solution, and pushing air through.
However, if there is grit in the jet you’ll need to strip down the carburetor and clean it. A fast-acting WD40 works well for removing grime deposits.
A tune-up for a lawnmower is a procedure that any owner should perform in order to keep their investment in good working condition.
This process ensures the best possible performance from one’s mower by addressing areas such as adjusting the engine’s carburetor, cleaning the fuel filter and spark plug and various other procedures that help maintain optimal performance.
In addition, a set of new oil filters should be considered along with an air filter or mesh pre-cleaner if so equipped with your mower. It may also be a good idea to replace the spark plug, although this is not necessary when you have done so within the last 150 hours of use.
In the tank, the fuel level decreases as it is used by the engine. A small vent allows air to enter the tank through the fuel cap in order to compensate for this.
If this vent becomes clogged it will cause engines to stall out because there won’t be enough air running through filling up all of those empty spaces in the engine causing it not to run as well as usual.
To determine if your fuel cap is damaged or obstructed inspect it for possible damage or dirt that might have collected inside blocking the path that air takes into the tank thus not allowing it inside to fill up those empty spaces needing more air circulation.
By slightly loosening your fuel cap and testing whether or not your test vehicle has improved functionality you can easily figure out whether your device needs fixing or replacing.
Lawn mower starts then dies