Perkins 1106D Troubleshooting Manual page 46

46
Troubleshooting Section
6. Attempt to start the engine. If the engine will not
start, proceed to "Low Pressure Fuel System".
Low Pressure Fuel System
1. If the temperature is below 0 °C (32 °F), check
for solidified fuel (wax).
2. Check for fuel supply lines that are restricted.
3. Check that the low pressure fuel lines are correctly
installed.
4. Check the diesel fuel for contamination. Refer to
Systems Operation, Testing and Adjusting, "Fuel
Quality - Test".
5. Check for air in the fuel system. Refer to Systems
Operation, Testing and Adjusting, "Air in Fuel -
Test".
6. Ensure that the fuel system has been primed.
Refer to Systems Operation, Testing and
Adjusting, "Fuel System - Prime".
7. Attempt to start the engine. If the engine will not
start, continue with this procedure.
8. Replace the primary fuel filter and the secondary
fuel filter. Refer to the Operation and Maintenance
Manual, "Fuel System Primary Filter (Water
Separator) Element - Replace".
9. Attempt to start the engine. If the engine will not
start, continue with this procedure.
10. Check the flow of fuel through the transfer pump.
If the flow of fuel through the transfer pump is
less than 250 mL per minute at 150 rpm, replace
the transfer pump. Refer to Disassembly and
Assembly, "Fuel Transfer Pump - Remove" and
Disassembly and Assembly, "Fuel Transfer Pump
- Install".
11. Attempt to start the engine. If the engine will
not start, proceed to "Secondary Speed/timing
Sensor".
Secondary Speed/timing Sensor
1. Connect the electronic service tool to the
diagnostic connector.
2. Check that the desired fuel rail pressure is at least
25 MPa (3625 psi) when the engine is cranking.
3. If the desired fuel rail pressure is less than 25 MPa
(3625 psi), perform the following procedure:
a. Use the electronic service tool to check the
signal from the secondary speed/timing sensor
while the engine is cranking.
This document is printed from SPI². Not for RESALE
b. If the signal from the secondary speed/timing
sensor is 0 rpm, investigate the secondary
speed/timing sensor. Refer to Troubleshooting,
"Engine Speed/Timing Sensor Circuit - Test".
c. If a fault is identified in the circuit for the
secondary speed/timing sensor, repair the fault
and then attempt to start the engine. If the
engine will not start, proceed to "High Pressure
Fuel System".
d. If the signal from the secondary speed/timing
sensor is greater than 0 rpm and the engine
will not start, proceed to "High Pressure Fuel
System".
High Pressure Fuel System
1. Use the electronic service tool to check the
absolute fuel rail pressure while the engine is
cranking at a minimum speed of 150 rpm.
2. If the absolute fuel rail pressure is less than
25 MPa (3625 psi), perform the following
procedure:
a. Check that the inlet pressure at the fuel rail
pump is greater than 50 kPa (7.25 psi). If the
inlet pressure is less than 50 kPa (7.25 psi),
repeat the diagnostic process from "Low
Pressure Fuel System".
b. Check for fuel leaks in the high pressure
fuel system. Rectify any fuel leaks and then
recheck the pressure in the fuel rail. If the fuel
rail pressure is greater than 25 MPa (3625 psi),
proceed to test step 3.
c. Use the electronic service tool to perform a
solenoid test on the fuel rail pump. Refer to
Troubleshooting, "Fuel Rail Pump Solenoid -
Test".
d. If any service has been performed as a result
of Step 2.c, attempt to start the engine. If the
engine will not start, repeat the diagnostic
process from "Diagnostic Codes".
e. Check the pressure relief valve in the fuel
rail for leakage. If the pressure relief valve is
leaking, replace the valve and recheck the
pressure in the fuel rail.
f. If the pressure relief valve in the fuel rail is
not leaking, check for fuel in the engine oil
system. If fuel is suspected in the oil system,
take an engine oil sample for analysis. Refer to
Operation and Maintenance Manual, "Engine
Oil Sample - Obtain". If the analysis confirms
that there is fuel in the engine oil system,
investigate the cause.
KENR6201-01