Poor Acceleration Or Response - Perkins 1104E Series Troubleshooting Manual

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Troubleshooting Section
Valve Lash
Refer to Troubleshooting, "Excessive Valve Lash".

Poor Acceleration or Response

Probable Causes
•
Refer to the logged codes.
•
Fuel supply
•
Individual malfunctioning cylinders
•
Valve lash
•
Low compression
•
Fuel injection nozzles
•
Turbocharger (if equipped)
•
ECM parameters
•
Intake manifold pressure (engines that are
turbocharged)
Recommended Repairs
Diagnostic Codes
Check for active diagnostic codes on the electronic
service tool. Troubleshoot any active codes before
continuing with this procedure.
Fuel Supply
NOTICE
Do not crank the engine continuously for more than
30 seconds. Allow the starting motor to cool for two
minutes before cranking the engine again.
1. Check the fuel pressure. Refer to Systems
Operation, Testing and Adjusting, "Fuel System
Pressure - Test".
2. Ensure that the fuel system has been primed.
Refer to Systems Operation, Testing and
Adjusting, "Fuel System - Prime".
3. Check the diesel fuel for contamination. Refer to
Systems Operation, Testing and Adjusting, "Fuel
Quality - Test".
4. Check for air in the fuel system. Refer to Systems
Operation, Testing and Adjusting, "Air in Fuel -
Test".
5. Check that the fuel lines are tight and secured
i01798138
properly.
6. Check for fuel supply lines that are restricted.
7. Check the fuel filters.
8. Visually check the fuel tank for fuel. The fuel
gauge may be faulty.
9. If the engine has a water separator, check for
water in the fuel.
10. Ensure that the fuel supply valve (if equipped) is
in the full OPEN position.
11. If the temperature is below 0 °C (32 °F), check
for solidified fuel (wax).
Individual Malfunctioning Cylinder
1. With the engine speed at a fast idle, loosen the
high pressure fuel line to the fuel injection nozzle
of number 1 cylinder. Note if there is any reduction
in engine speed. Tighten the fuel line to the fuel
injection nozzle.
2. Individually repeat this procedure for each fuel
injection nozzle.
3. If there is no reduction in the engine speed
proceed to "Check the Fuel Injection Nozzles".
4. If there is a reduction in engine speed proceed to
"Valve Lash".
Valve Lash
1. Check the valve lash and reset the valve lash, if
necessary. Refer to Systems Operation, Testing
and Adjusting, "Engine Valve lash - Inspect and
Adjust".
2. If the repair does not eliminate the fault proceed to
"Check for Low Compression".
Check for Low Compression
1. Remove the fuel injection nozzles and perform a
compression test. Refer to Systems Operation,
Testing and Adjusting, "Compression - Test "data.
2. Make all necessary repairs to the engine.
3. Ensure that the repairs have eliminated the faults.
RENR2696-01