CUMMINS N14 - Engine Acceleration;Response Poor (Continued)

Engine Acceleration/Response Poor (Continued)
Cause Corrections
----------
Install CompuchekT. Perform ‘‘Low
Power Test’’
OK
f
Refer to CompuchekT Test Procedures
Manual, Bulletin No. 3810485 (NT).
----------
AFC Signal Line and/or ASA Valve
Restricted or Leaking
OK
f
Check AFC signal line or ASA valve for
restriction or leakage. Refer to the Injector
Specifications Book, Bulletin No. 3379664.
----------
Fuel Supply Line Excessive Restriction
Between Pump and Injectors
OK
f
Check rail supply line from fuel pump to
cylinder head for sharp bends which can
cause restriction. Remove injectors and
check calibration. Check inlet screen. Check
for proper top link. Refer to the Injector
Specifications Manual, Bulletin No. 3379664.
Check fuel crossover connections and fuel
drillings in the cylinder head for restrictions.
----------
PT Fuel Pump AFC Operation Malfunc-
tioning or Calibration Incorrect
Remove PT fuel and check calibration and
check AFC for proper operation. Refer to PT
Fuel Pump Rebuild and Calibration Manual,
Bulletin No. 3379084.
Troubleshooting Symptoms Charts SectionT-Troubleshooting
N14Page T-24