Rough Engine Operation; Low Oil Pressure On Engine Gage - Superior Vantage Engine O-360 SERIES Maintenance Manual

Probable Cause/ Added Possible Indications
Broken engine mount; evidence of external
engine component wear, rubbing or abrasion
Mounting bushings worn
Unstable compression
Probable Cause/ Added Possible Indications
Mixture too rich; indicated by sluggish engine
operation, red exhaust flame at night. Extreme
cases indicated by black smoke from exhaust
Mixture too lean; indicated by overheating or
back firing
Leaks in induction system; high manifold
pressure
Defective spark plugs; engine misfire
Improper fuel; detonation
Magneto breaker points not working properly
Defective ignition wire
Defective spark plug terminal connectors
Probable Cause/ Added Possible Indications
Lack of oil; high oil temperature
Air lock or dirty relief valve
Leak in line; evidence of oil near engine or on
ground
High oil temperature
Defective pressure gage.
Stoppage in oil pump intake passage
© March 2006 Superior Air Parts Inc.
Maintenance Manual
O-360 and IO-360 Series Engines
Table 72-00-01.5 • Rough Engine Operation
Table 72-00-01.6 • Low Power & Engine Runs Rough
Table 72-00-01.7 • Low Oil Pressure On Engine Gage
Correction
Replace or repair mount.
Install new mounting bushings.
Check cylinder compression.
Correction
Readjustment of fuel injector or carburetor may
be required by authorized personnel.
Check fuel lines for dirt or other restrictions.
Readjustment of fuel injector or carburetor may
be required by authorized personnel.
Tighten all connections. Replace damaged
parts.
Clean and gap or replace spark plugs.
Drain and refill tank with proper grade.
Clean points. Check internal timing of
magnetos.
Check wire with electric tester. Replace
defective wire.
Replace connectors on spark plug wire.
Correction
Add to proper level.
Clean relief valve.
Inspect gaskets and hose fittings
See Table 72-00-01.9, "High Oil Temperature".
Replace defective gage.
Check line for obstruction. Clean suction
strainer.
3
72-00-01
Testing and Fault Isolation