EXHAUST TEMPERATURE IS ONE OF THE MOST IMPORTANT PARAMETER OF THE ENGINE AND SHOULD BE CHECKED DURING EVERY ROUNDS AS DEVIATION FROM NORMAL WILL GIVE US PRIOR INDICATION OF ANY PROBLEM THAT IS MANIFESTING ITSELF.
DECREASE IN EXHAUST TEMPERATURES CAN BE DUE TO MANY REASONS. LETS US DIVIDE THEM INTO 2 CATEGORIES :-
A) WHEN EXHAUST TEMPERATURE OF ALL UNIT DECREASES :-
- DECREASE SCAVENGING AIR TEMPERATURE FOR WHICH ONE MUST ADJUST THE BYPASS LINE.
B) WHEN EXHAUST TEMPERATURE OF ANY SINGLE UNIT FALLS :-
- AIR IN FUEL PUMPS AND FUEL VALVE.
- FUEL VALVE SPINDLE STICKING.
- FUEL VALVE CHOCK.
- SUCTION VALVE IN FUEL PUMP DEFECTIVE.
- FUEL PUMP PLUNGER STICKING.
- CHECK THAT THE RACK OF FUEL PUMP IS AT PLACE OR NOT.
- PUNCTURE VALVE STUCK TO OPEN CONDITION.