What they do
All vehicles with engine management systems utilise
an electric fuel pump, its purpose is to deliver fuel from
the fuel tank to the engine/engine management system at the
required pressure and delivery rate. The pressure and delivery
rate vary according to the vehicle to which it is fitted.
Later
vehicles are often fitted with a fuel pump module/assembly
which includes the fuel level gauge sender unit. It is also
becoming more common place to incorporate the fuel pressure
regulator into the same unit.
Range
Fuel Parts UK offer an ever increasing range of over
240 direct fit fuel pump part numbers, plus our range of semi
universal replacement pumps. All are covered by a comprehensive
12 month guarantee and come complete with fitting instructions.
Symptoms of failure
Fuel pump failure can be partial or catastrophic.
Partial failure results in poor performance, low top speed,
reduced power up hills and under load and is often caused
by the fuel pump reaching the end of its life. Catastrophic
failure results in vehicle breakdown.
Failure of the fuel level gauge unit in the assemblies will
also require the complete module to be replaced. Should the
pump fail in a module/assembly the repairer can make a choice
between replacing the pump only or complete assembly renewal.
Maintenance
No maintenance of the fuel pump/assembly is required
and there are no internally serviceable parts.
Due to the high manufacturing tolerances used to enable the
pump to attain the high pressures required of the injection
system, it is essential that the fuel used is clean and when
any repair work is carried out that involves disassembling
any part of the fuel system the utmost cleanliness should
be observed.
Ensure that the vehicle manufactures recommendations are
followed regarding fuel filter replacement are followed.
Typical location
Fuel pump assemblies are usually fitted inside
that fuel tank and often accessed from within the passenger
compartment. Under-vehicle types are, as their name suggests,
fitted under the car in a location that is as close to the
fuel tank as possible to benefit from the gravitational effect
of the fuel.
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