Fuel Priming
In order for the fuel system to work properly, the fuel lines
must be full of fuel and contain no air. If air gets into the
fuel lines, it will be necessary to prime the fuel lines, to
eliminate air before operating the vehicle.
Q: How does air get into the fuel lines?
A: One of the following may have happened:
• The vehicle ran out of fuel
• The fuel filter was removed for servicing or
replacement
• The fuel lines were removed or disconnected for
servicing
• The fuel filter water drain valve was opened while
the engine was running
If one or more of the above occur, it is very likely that
air has entered your fuel system and that you will need
to prime the fuel system before operating the vehicle.
Air in the fuel lines will not harm the engine or the
vehicle.
However, the engine may not be able to start until the
fuel system is primed and the air is removed.
Q: How do I prime the vehicle? (Pickup Models)
A: Your vehicle is equipped with a priming pump which
is part of the engine mounted fuel filter. The priming
pump is hand operated (pickup only) and is designed
to bring fuel to the engine to eliminate any air that
may be in the fuel lines. To prime the engine, do the
following:
1. You must correct the condition which caused the loss
of prime by making sure there is fuel in the tank.
2. Make sure the fuel filter has been installed and
properly tightened.
3. Make sure the fuel lines are properly connected
and the fuel filter is cool enough to touch.
4. Remove any dirt from the fuel filter head and vent
valve by wiping with a cloth.
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