Reasons for ENGINE HUNTING IN HIGHER NOTCHES

ENGINE HUNTING IN HIGHER NOTCHES 
a) CLOGGED AIR FILTERS. 
b) STUCK UP INJECTORS. 
c) IMPROPER ADJUSTMENT OF FUEL RACKS. 
d) BLOCKING OF AIR INLET DUCT. 
e) EXHAUST MANIFOLD EXPANSION JOINT PUNCTURED. 
f) MALFUNCTION OF GOVERNOR. 
g) DEFECTIVE CLUTCH. 
h) DEFECTIVE TURBO CHARGER. 
i) IMPROPER SUPPLY OF AIR. 
j) HIGH ENGINE TEMPERATURE DUE TO FANS NOT WORKING. 
k) INSUFFICIENT SUPPLY OF FUEL. 
l) OSTA PAWL STUCK IN TRIPPED CONDITION.