Piper Comanche PA-24 Service Manual page 512

PIPER COMANCHE SERVICE MANUAL
TARLE VilA-III TROUBLESHOOTING CHART
(E'GI'E) (CARBURETOR) (cont)
Trouble
Cause
Remedy
Failure of engine to
Throttle lever out of Adjust throttle ber.
develop full power
adjustment.
Leak in induction system. Tighten all connectIons. and
replace defecti\e parts
Restriction in carburetor Examine air scoop and remove
air scoop
restriction
Improper fuel. Fill tank with recommended
fuel.
Propeller governor put
Adjust governor.
out of adjustment.
Faulty ignition. Tighten all connections
Check system. Check
ignition timing.
Rough running engine Cracked engine mounts.
Repair or replace engine
mount.
Unbalanced propeller.
Remove propeller and ha\e
it checked for balance
Bent propeller blades. Check propeller for track
Defecti\e mounting.
Install ne" mounting
bushings
Lead deposit on spark Clean or replace plugs
plug
Malfunctioning engine Check entire engine
Lo\\ oil pre>sure Insufficient oil Check oil supply
Dirty oil screens.
Remove and clean oil
screens
Defective pressure gage
Replace gage
Air lock or dirt in relief Remove and clean oil pres-
\'al"e
sure relief val\e.
Leak in suction line or
Check gasket between
pressure line
accessory housing crank-
case.
High oil temperature. See -'High Oil Temperature"
in Trouble Column
Stoppage in oil pump intake
Check line for obstruction
passage.
Clean suction screen
Worn or scored bearings Overhaul.
ISSUED: 8/18/72
2EIO
POWER PLAe