Honda Lawn Mower is Leaking Gas (Solved!)

Your garage smells strongly of rotten food. You’ve narrowed down the source of the fuel leak to your Honda lawn mower, but you can’t pinpoint where it’s located. Smelling the liquid closely, but not too closely, can help you determine if it’s gasoline. There are a number of places where gas may leak from your mower.

9 Places Your Honda Lawn Mower Can Start Leaking Gas

There is deterioration in the fuel line and primer bulb

A Honda mower has a primer bulb that pushes air out of the gas lines and carburetor when it is pushed. This fills the space with the fuel and oil mixture that powers the machine when you push the bulb. An unclean or dried-out primer bulb is easily prone to leaking fuel down the machine and dripping from the front of the machine if it is cracked, perforated, or dry. Another possible problem may be the line that connects the primer bulb to the fuel tank, and the line that connects the carburetor to the fuel tank. If necessary, replace the bulb and the lines if they are in poor condition.

Changing the fuel filter on a Honda lawn mower

There is a possibility that the fuel filter on your Honda push mower may start leaking at the seams after a while. It is possible for the fuel that sits in the filter to degrade and soften the plastic housing over time as the fuel sits in it, resulting in leakage.

Replace a leaking fuel filter by making sure the arrow on the housing of the replacement filter is facing the direction of fellow, and the filter is installed with the arrow facing the direction of fuel low. The arrow needs to be pointing away from the fuel tank and towards the carburetor in order to be effective.

A Honda lawnmower float needle is available for purchase

There is a possibility that the float needle is not shutting off the fuel properly. There is a float needle that regulates the liquid level in the float bowl by opening and closing the float valve. An overfilled carburetor is caused by a damaged float needle. Float needles should be replaced if they are defective.

Fuel lines for Honda mowers

In the course of time, rubber fuel lines will become dry and crack as they age. It is possible for cracks to develop into leaks when the fuel line is in this condition. In addition, the line can begin to leak when the clamp is used to attach it to a component, which causes it to leak at the point of attachment. Depending on how the clamp is used, the line can either become punctured or loose, causing the line to leak.

If you plan to remove and replace the fuel line, you will need to shut off the fuel supply by using the fuel shut-off valve. It is a good idea to replace any pinch-style hose clamps that came with your Honda mower with worm gear clamps, as they are less likely to cause leaks compared to pinch-style hose clamps.

A malfunctioning carburetor can be a very serious problem

At the front of a lawn mower, the carburetor can leak gasoline. Gaskets on carburetors can suffer from drying out, hardening, and cracking over time, creating vulnerable areas where gasoline can leak. There is also a possibility that a leak in the carburetor could be caused by the float mechanism. It is common for the float to become stuck open, resulting in gas dripping or flowing as it is operated, particularly during operation.

The solenoid for shutting off the fuel in Honda lawnmowers

Fuel shut-off valves should be checked for leaks and the fuel lines should fit tightly on the valves. Replacing the solenoid that shuts off the fuel supply is a good idea if the solenoid leaks. Moreover, check for cracks or tiny holes in the fuel shut off lines. Fuel shut-off lines that leak should be replaced.

Gas cap for Honda lawnmowers

Gas caps have seals. In the event that the fuel cap does not seal, fuel can leak from the tank while you are using your mower and fuel sloshes around the tank and up to the cap as a result.

Fuel tank caps will develop wet spots around the outside of the cap area. It is possible that you have not noticed a fuel leak in this area since fuel evaporates into the air and leaves no evidence of its presence.

After checking all the items above, if you’re still unable to find the cause of your fuel leak, you need to inspect the fuel cap.

Watch for any wet spots that develop around the cap when you rock the mower back and forth to splash fuel up to the area around the cap and determine if there is a bad seal in the cap. In case you notice a wet spot on the cap of your Honda mower, you should replace it with a new Honda mower cap.

The perforations on a gas tank

Perforations in the Honda mower’s gas tank can cause a gas leak more seriously. It is possible to cause a hole in the fuel tank if a sharp object like a rock or piece of metal gets caught in the blade and is flung against the fuel tank when it gets caught in the blade. Older mowers whose gas tanks have been stored improperly and have been exposed to the elements for a long period of time may rust out. In order to check for holes or perforations in the fuel tank, turn the mower on its side and turn the tank over.

Fuel Pump Body for Honda Lawn Mowers

Ensure that the fuel lines and vacuum lines are securely attached to the fuel pump so that there is no leakage. Ensure that there are no cracks or tiny holes in the fuel pump body. There may be a leak in the fuel pump, in which case it should be replaced.

Consultation

To minimize the damage to your fuel components, it is always advisable to run good fresh fuel through your fuel system. A fuel stabilizer reduces moisture buildup and prevents fuel breakdown.