20B FUEL SYSTEM
To eliminate air from the
fuel system20B-08
If air enters the fuel system, it must be removed
before the engine can be started.
Air can enter the system if:
• The fuel tank is drained during normal operation.
• The low-pressure fuel pipes are disconnected.
• A part of the low-pressure fuel system leaks
during engine operation.
In order to eliminate air from the fuel system,
proceed as follows:
1 Loosen the vent plug (B1) on top of the fuel filter
by two or three turns. Operate the priming pump
(C) of the fuel lift pump until fuel, free of air, comes
from the filter vent point. Tighten the vent plug.
2 Loosen the banjo connection bolt (C1) at the
drive end of the fuel pump. Operate the priming
pump of the fuel lift pump until fuel, free of air,
comes from the loosened connection. Tighten the
banjo connection bolt.
3 Ensure that the stop control is in the run position
and the speed control is in the maximum speed
position. Operate the starter motor. When the
engine starts, reduce the engine speed. If the
engine runs correctly for a short time and then
stops or runs roughly, check for air in the fuel
system. If there is air in the fuel system, there is
probablely a leakage in the low pressure system.
1
PA208
1
PA207
20B.14 Perkins Phaser/1000 Series, April 1995
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