Superior IO-360 SERIES User Manual

Installation & Operation Manual
O-360 and IO-360 Series Engines
3
© March 2004 Superior Air Parts Inc. Chapter 7 • Abnormal Operating Procedures
4. ENGINE NOT ABLE TO DEVELOP FULL POWER
5. ROUGH ENGINE OPERATION
6. LOW POWER & ENGINE RUNS ROUGH
Table 7-4 • Engine Not Able To Develop Full Power
Probable Cause Correction
Leak in the injection system Tighten all connections and replace damaged
parts.
Throttle lever out of adjustment Adjust throttle lever.
Improper fuel flow Check strainer, gage and flow at the fuel inlet.
Restriction in air scoop Examine air scoop and remove restrictions.
Improper fuel Drain and refill tank with proper fuel
Faulty ignition Tighten all connections. Check system with
tester. Check ignition timing.
Table 7-5 • Rough Engine Operation
Probable Cause Correction
Broken engine mount Replace or repair mount.
Mounting bushings worn Install new mounting bushings.
Unstable compression Check compression.
Table 7-6 • Low Power & Engine Runs Rough
Probable Cause Correction
Mixture too rich; indicated by sluggish engine
operation, red exhaust flame at night. Extreme
cases indicated by black smoke from exhaust
Readjustment of fuel injector or carburetor may
be required by authorized personnel.
Mixture too lean; indicated by overheating or
back firing
Check fuel lines for dirt or other restrictions.
Readjustment of fuel injector or carburetor may
be required by authorized personnel.
Leaks in induction system Tighten all connections. Replace damaged
parts.
Defective spark plugs Clean and gap or replace spark plugs.
Improper fuel Drain and refill tank with proper grade.
Magneto breaker points not working properly Clean points. Check internal timing of
magnetos.
Defective ignition wire Check wire with electric tester. Replace
defective wire.
Defective spark plug terminal connectors Replace connectors on spark plug wire.

Superior IO-360 SERIES Specifications

General

Brand	Superior
Model	IO-360 SERIES
Category	Engine
Language	English