THRUSH AIRCRAFT, INC – MODEL S2R-R1340
AIRCRAFT MAINTENANCE MANUAL
4-38
Effective: 01/01/2008
Table 4-1: Engine Trouble Shooting Chart, Page 13 of 13
TROUBLE PROBABLE
CAUSE
REMEDY
Burned breaker
points
Point clearance too small
Faulty condenser
Oil on points
Reset point clearance.
Replace breaker points if
necessary.
Replace condenser
Replace and reset
breaker points
One spark plug
cutting out or dead
Fouled spark plugs
Faulty wires in ignition cable manifold
Faulty distributor segment
Replace spark plugs
Replace manifold
Replace magneto
Both plugs in one
cylinder cutting
out
Fouled spark plugs
Faulty wires in ignition cable manifold
Cylinder pumping oil
Replace spark plugs
Replace manifold
Replace cylinder
Front or rear
spark plugs cutting
out on all cylinders
Right or left magneto malfunctioning
Ground wires in magneto broken
Ignition switch faulty
Replace magneto
Replace magneto
Replace switch
On magneto check,
all spark plugs
firing but engine
does not develop
power
Magneto timing off
Retime magneto
Metal or Foreign
material in
strainer, screens or
sumps
Lack of care in assembling engine
Damaged engine parts
Foreign material in oil or oil system
Contaminated oil cooler
Replace engine
Replace engine
Replace engine
Replace cooler
