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HomeRepair HelpSubaru RepairSubaru Small engine leaks gas Repair
Subaru Small engine leaks gas
When a Subaru small engine is leaking gas, start by checking the carburetor. A dried-out or missing carburetor gasket is the most likely cause, especially when fuel is coming from the bottom of the carburetor. Next, inspect the carburetor float bowl gasket and carburetor bowl gasket for damage, shrinkage, or improper sealing. Stale or ethanol-blended fuel left in the carburetor can deteriorate these gaskets and contribute to a small engine fuel leak, particularly on seasonal equipment. If the leak is not at the carburetor, inspect the fuel tank for cracks and replace it if damaged. Do not try to repair a leaking fuel tank. Check the fuel line for cracks or dry, brittle sections, and replace any damaged line rather than patching it. Finally, examine the primer bulb for brittleness or cracks, since an aging bulb can leak gas. Before servicing, shut off the fuel supply and let the engine cool. Enter your model number to find the exact replacement carburetor gasket, float bowl gasket, fuel tank, fuel line, or primer bulb for your specific Subaru small engine.
01 - Subaru Float Bowl Gasket
The carburetor float bowl gasket might be dried out or missing. If the leak is coming from the bottom of the carburetor, try replacing the carburetor float bowl gasket.
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02 - Subaru Carburetor Bowl Gasket
The carburetor bowl gasket might be dried out or missing. If the leak is coming from the bottom of the carburetor, try replacing the carburetor bowl gasket.
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03 - Subaru Carburetor Gasket
The carburetor gasket might be dried out or missing. If the leak is coming from the bottom of the carburetor, try replacing the carburetor gasket.
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04 - Subaru Fuel Tank
The fuel tank might be cracked or have a small leak. Inspect the fuel tank for leaks. If there is a leak, replace the fuel tank—do not attempt to repair it.
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05 - Subaru Fuel Line
One or more of the fuel lines may have a leak. Inspect the fuel lines for cracks. If any of the fuel lines are cracked or dry, replace them. Do not attempt to repair a fuel line—if a fuel line is cracked, you must replace it.
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06 - Subaru Primer Bulb
The primer bulb may be leaking. Over time, the rubber of the primer bulb can become brittle and cracked, causing the bulb to leak gas. If the primer bulb is leaking, replace it. Do not attempt to patch or repair the primer bulb.
Highly Likely
07 - Subaru Carburetor
Over time, the carburetor may develop cracks due to the vibration and heat of the engine. If the carburetor is cracked, it will leak fuel. Inspect the carburetor for cracks or corrosion. If the main body of the carburetor is leaking, you will most likely need to replace the carburetor.
Common
Frequently Asked Questions
Why is my Subaru small engine leaking gas from the carburetor?
What should I check if my Subaru small engine is leaking fuel from the fuel line or tank?
Why is gas leaking from the primer bulb on my Subaru small engine?
Can old gasoline cause a Subaru small engine to leak gas?
How do I find the correct replacement part for my leaking Subaru small engine?