Engine Will Not Start; Rough Idling; Engine Not Able To Develop Full Power - Superior Vantage Engine O-360 SERIES Maintenance Manual

Probable Cause/ Added Possible Indications
No Fuel
Excessive Priming; difficult to start engine, fuel
vapors or fuel draining
Defective ignition wire; rough running or
misfiring engine, colder than normal EGT
Dead battery; no starter engagement
Malfunction of magneto breaker
Lack of sufficient fuel flow; high EGT
Water in fuel injector or carburetor; rough
running engine
Internal failure; rough running engine, smoke,
engine noise
Probable Cause/ Added Possible Indications
Incorrect idle mixture
Leak in the induction system; high RPM idle,
high manifold pressure
Incorrect idle adjustment
Uneven cylinder compression
Faulty ignition system; engine misfire
Table 72-00-01.4 • Engine Not Able To Develop Full Power
Probable Cause/ Added Possible Indications
Leak in the injection system; fuel leakage
Throttle lever out of adjustment
Improper fuel flow; fouled plugs, black exhaust
Restriction in air scoop
Improper fuel; detonation, high CHT
Faulty ignition; rough running engine
© March 2006 Superior Air Parts Inc.
Maintenance Manual
O-360 and IO-360 Series Engines
Table 72-00-01.2 • Engine Will Not Start
Fill with fuel.
Leave ignition "Off" and mixture control in "Idle
Cut-Off", open throttle and clear cylinders by
cranking a few seconds. Turn ignition switch
"On" and proceed to start.
Check with electric tester, and replace any
defective wires.
Replace battery.
Clean points. Check internal timing of
magnetos
Disconnect fuel line and check fuel flow.
Drain fuel injector or carburetor and fuel lines.
Check oil screens for metal particles. If found,
complete overhaul of the engine may be
required.
Table 72-00-01.3 • Rough Idling
Adjust mixture.
Tighten all connections in the induction system.
Replace any damaged parts.
Adjust throttle stop to obtain correct idle.
Check condition of piston rings and valve
seats.
Check entire ignition system.
Tighten all connections and replace damaged
parts.
Adjust throttle lever.
Check strainer, gage and flow at the fuel inlet.
Examine air scoop and remove restrictions.
Drain and refill tank with proper fuel.
Tighten all connections. Check system with
tester. Check ignition timing.
2
Correction
Correction
Correction
72-00-01
Testing and Fault Isolation