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FUEL SYSTEM: FUEL FILTER MAINTENANCE



Maintaining a clean fuel supply is essential for proper and reliable engine operation which makes the the job of the fuel filter very important. The fuel filter is guides the the fuel system against dirt, rust, and all kinds of debris. Without the fuel filter components of the fuel system like the carburetor and valves become exposed to contaminants and this could lead to serious issues like preventing valves from seating or clog the injector inlet screens and starve the injector for fuel. Fuel filter also separates water from fuel and this helps protect the injectors and pump from corrosion

There are two kinds of fuel filters
i. In-line filters - located between the fuel tank and carburetor
ii. Internal filters- these are fitted inside the carburetor fuel inlet on older vehicles






A lot of late model vehicles with gasoline engines have a fuel filter designed to serve a lifetime and they are located inside the fuel tank with the pump. Factories do not give recommended service interval for these filters


Diesel engine powered vehicles have an in-line filter with a recommended service interval of 24,000 to 30,000 miles

Older vehicles with gasoline engines with in-line fuel filter usually have a recommended service interval of 30,000 to 50,000 miles

NOTE; 
i. Never replace an in-line filter by trying to pry the fuel lines apart from the filter, this will damage the lines. Replacing in-line filters with quick lock couplings require special tools to release the couplings
ii. Always use Top Tier gasoline, this will keep your fuel injectors, intake manifold and throttle clean and reduce buildup of carbon deposits on valves, pistons  and combustion chamber
iii. Always inspect the condition of the fuel lines and hoses whenever you replace fuel filters. Why? Rubber hoses tend to age i.e harden and develop cracks and leaks after years of service. If you notice brittleness, cracks or leakage replace hose without delay. NEVER DRIVE A VEHICLE WITH FUEL LEAKAGE
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