UAZ PATRIOT Operation Manual page 109

Clogging of the strainer fuel module, final fuel filter, presence
of dirt and mechanical admixtures in the fuel tank manifest first
of all in deterioration of the pumping of the fuel from the left-side
tank into the right-side one, unstable engine operation at high
loads and degradation of the motor vehicle performance. If such
signs arise, seek help from a service station in order to prevent
the fuel priming pump failure.
Notes. At atmosphere temperature below 0°C clogging
symptoms can be caused by water freezing in fuel system. When
detecting water in fuel purge fuel and rinse fuel tanks with pure
fuel and fine fuel filters are to be replaced.
Couplings leak is to be rectified by coupling tightening (see
Annex 2) or defected element replacement.
Upon completion of any maintenance of fuel system operations
related to tightening of connections, removal or replacement of
parts and assemblies, the system tightness must be checked:
- make sure the filler ports plugs are securely tightened;
- tighten collars and screw couplings to sealed condition;
- fuel tubes shall be installed until "click" of the quick coupler's
locking spring;
- start the engine running idle and check the system visually.
Fuel leaks and wetting of fuel system components are not
permitted.
In the course of the motor vehicle operation, pay attention to
the following:
- if there is a strong smell of gasoline within the interior,
engine room, locations of passage of fuel and steam lines and
tubes, check tightness of joints, condition of the absorber (cracks
and damage, serviceability of the absorber purge valve);
- operability of the evaporative emission control system (the
absorber and the fuel tank valve). Any failure of these elements
leads to fuel supply system failures. Damaged components shall
be replaced.
Accelerator pedal drive. The motor vehicle is equipped with an
accelerator pedal electronic module. Accelerator pedal is made
of plastic. Full pedal stroke equals 48,7 mm and is provided with
stable design and is not regulated.
Air filter. After every 30000 km of total kilometres logged
and after engine capacity reduction, replace filter element.
The filter element shall be replaced as follows:
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