(Table 134, contd)
Troubleshooting Test Steps
Values Results
4. Intake Manifold Pressure
A. Use the electronic service tool to verify the intake manifold
pressure.
Turn the start switch to the ON position.
The intake manifold pressure must read 0 ± 0.5 kPa
(0 ± 0.07 psi).
Intake manifold Result: The intake manifold pressure does not read
0 ± 0.5 kPa (0 ± 0.07 psi).
Repair: Refer to Troubleshooting, “Intake Manifold Air Pres-
sure Is Low”.
Result: The intake manifold pressure reads 0 ± 0.5 kPa
(0 ± 0.07 psi).
Proceed to Test Step 5.
5. Fuel Supply
A. Visually check the fuel level in the fuel tank. Do not rely on
the fuel gauge only.
B. Ensure that the vent in the fuel cap is not filled with debris.
C. Ensure that the fuel supply valve (if equipped) is in the full
OPEN position.
D. If the temperature is below 0 °C (32 °F), check for solidi-
fied fuel (wax).
E. Check the primary filter/water separator for water in the
fuel.
F. Check for fuel supply lines that are restricted.
G. Check that the low-pressure fuel lines are tight and se-
cured properly.
H. Check that the Electric Fuel Lift Pump (EFLP) is operating
correctly.
I. Replace the in-line fuel filter that is upstream of the primary
fuel filter.
J. Replace the primary and secondary fuel filters.
K. Check the diesel fuel for contamination. Refer to Systems
Operation, Testing, and Adjusting, “Fuel Quality - Test”.
L. Check for air in the fuel system. Refer to Systems Opera-
tion, Testing, and Adjusting, “Air in Fuel - Test”.
M. Ensure that the fuel system has been primed. Refer to
Systems Operation, Testing, and Adjusting, “Fuel System -
Prime”.
Fuel system Result: The fuel supply is not OK.
Repair: Repair the fuel system or replace the fuel system
components, as necessary.
Result: The fuel supply is OK.
Proceed to Test Step 6.
250 UENR4469-36
Symptom Troubleshooting
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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