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Requirements
no leaks, fuel cap fastens correctly and seals securely. The fuel cap will need to be opened. Make sure the key is available.

Fuel system


Test procedure

The fuel system inspection is a very important part of the MOT test. The inspector will examine the entire fuel system for safety and potential leak sources. The inspector will look around the vehicles fuel tank and check for signs of advanced corrosion or any evidence of leaks. The inspector will follow all fuel lines along the vehicle looking for evidence of damage and leak sources. 

Any leak in the fuel system is an MOT failure. The inspection follows the fuel system from the fuel tank right to the carburettor or fuel injector. Any fuel leak that is found will result in an MOT failure.

 

Common faults

  • Fuel leaks. Any fuel leak will result in an MOT test failure. Not only does a fuel leak present a fire risk, but it can also cause a hazard for other road users if fuel is spilled onto the road surface.
  • Incorrect fuel cap. To pass an MOT test the fuel system must be complete with a locking fuel filler cap. If the cap can't be locked then the vehicle will fail the MOT test.
  • Fuel tank condition. If the fuel tank is in a bad condition this can often result in an MOT failure. For example advanced corrosion or serious road damage may cause the tank to be unsafe.
  • Fuel pipe condition. Corroded or damaged fuel pipes can be the cause of a failed MOT test. Advanced corrosion can lead to fuel leaks.

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