FUEL SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
EXHAUST TEMPERATURE TEST
N OT E
When engine runs at low idle, temperature of an exhaust manifold port can indicate the condition of a
fuel injection nozzle.
A low temperature indicates that no fuel is flowing to cylinder. An inoperative fuel injection nozzle or a
problem with fuel injection pump could cause this low temperature.
A very high temperature can indicate that too much fuel is flowing to cylinder. A malfunctioning fuel
injection nozzle could cause this very high temperature.
Using thermometer, check exhaust temperature at each exhaust port of exhaust manifold.
Close hood (TM 5-3805-291-10).
END OF WORK PACKAGE