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Overflow of fuel in a Volkswagen Polo can occur due to several issues, including a clogged fuel return line, a malfunctioning fuel pressure regulator, or a faulty fuel sending unit. Additionally, problems with the fuel tank venting system can cause pressure buildup, leading to overflow. Regular maintenance and inspections can help identify and resolve these issues before they result in fuel overflow.

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What causes when fuel overflow?

Fuel overflow can occur due to several reasons, including a malfunctioning fuel pump, a clogged fuel line, or a faulty fuel cap that fails to maintain proper pressure in the tank. Additionally, overfilling the fuel tank beyond its capacity can lead to spillage, especially during temperature changes that cause the fuel to expand. Improper installation of fuel system components or damaged fuel injectors can also contribute to fuel overflow problems. Regular maintenance and inspection can help prevent these issues.


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