THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
4-36
Effective: 01/01/2008
Table 4-1: Engine Trouble Shooting Chart, Page 11 of 13
TROUBLE PROBABLE
CAUSE
REMEDY
Engine overheats
Faulty gage transmitter or
thermocouple
Loose spark plugs
Improperly timed magneto
Improper fuel-air mixture
Air leak in induction system
Preignition
Wrong grade of fuel
Clogged or frozen oil cooler
Oil cooler air intake restricted
Oil cooler bypass temperature control
unit defective
Oil foaming
bearing malfunction
Replace faulty unit
Tighten spark plugs
Time magnetos
Adjust fuel-air mixture
Repair
Reset timing
Drain tanks and service
with correct grade
Remove, clean, repair or
replace oil cooler as
necessary
Remove restriction
Replace defective unit
Drain, flush, and replenish
oil supply.
Replace engine
One cylinder
overheating
Loose spark plugs
Preignition and detonation
Excessive exhaust valve clearance
Loose intake pipe
Improperly fitted air deflectors
Tighten spark plugs
Reset timing
Reset valve
Tighten air intake pipe
Remove and reinstall
deflectors correctly
