Honda mower starts then dies

Honda mower starts then dies. When your mower stops or starts and then dies in the middle of a job, it can leave you drained because, well, it’s hot out there, and who wants to be working under the sum?

Don’t be worried if this has ever happened to you or someone you know. We’re going to discuss the causes behind the start-then-die issue and how to resolve each one of them.

When your mower dies right in the middle of a job, it can seem like you’re sick, but this issue is more common than many would like to believe and even simpler as a fix than what most might expect.

Let’s take a look at why certain things happen on a regular basis when dealing with these sorts of issues, along with ways that they can be dealt with so they don’t affect future use in the near future!

Honda mower starts then dies

If your honda lawn mower starts, runs briefly, then dies, there are 4 possible causes: Your carburetor is dirty or clogged, Your gasoline has gone bad, Your spark plugs may need replacing, or You have too much oil in the tank.

Clogged Carburetorclogged carburetor

A Clogged Carburetor is no laughing matter. A clogged carburetor can cause a variety of different ailments, and the source of the problem is usually something rather simple.

If your lawnmower has trouble starting, chances are that you need to clean out your carburetor.

You may have left fuel in the gas tank for too long, where some of the lighter fuel penetrates through and evaporates whilst the heavier substance (usual ethanol) sticks to the walls of the tank and, over time, hardens, eventually obstructing all available pathways for air and fuel flow through.

Choke’s Fault

A choke is a metal flap that blocks a carburetor’s air intake, providing extra fuel to start an engine in the correct way. A cold engine will stall when getting more fuel instead of more gas.

It’s important to check the choke during use, and look for signs that it stays open when the engine warms up and starts easily. Check if the choke moves freely or if it sticks and becomes unable to open fully because then it won’t work as designed!

You can test its operation by removing your air filter and gauging that depending on your mower model and features.

Problem with Fuel Bowl

All carburetors have bowls that duct contain a fuel supply at the bottom of the air filter. The bowl is commonly found on the right side of some lawnmower engines and resembles a syringe.

It is fuel cap protected unless opened by an amount of gas, at which time it will vent slightly, depending on your mower’s model.

Cleaning the bowl should ease any gas-related troubleshooting issues, and it’s necessary to check regularly for clogged vents or sediment, which would otherwise restrict proper airflow (and, in more extreme cases, hinder your engine performance.)

Spark Plug Issuespark plug issue

Inspect the spark plug for signs of damage or wear.

Replace the spark plug if the porcelain insulator is cracked, the electrodes are burned away or damaged, or there is heavy carbon buildup at the electrode.

Use a spark plug tester to determine if a spark plug is defective. The tester’s terminals should spark strongly when you crank them. If not replaced, it could cause engine damage.


Are carburetors cleanable without removing them?

Cleaning your Carburetor largely involves taking care of the jets or vents. Cleaning them with a jet brush is important as it helps to deepen and widen channels in the carburetor, which is important for airflow.
However, you should never clean these vents without also cleaning the whole carburetor completely. This is because this process does not hit every nook and cranny of the engine and misses out on air channels – which are just as important for getting the engine turned on again when one fires up.

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