d02877.fm
MAINTENANCE MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2 / Rev. 0
05-50-00
page 7
October 01/2009
3) Examination after engine failure
General note In order to find possible causes of the failure, it is important to pass on all
available data. Observations on the aircraft and the engine suspension
can also be of help. It is important to pay particular attention to any of the
following engine phenomena to facilitate troubleshooting.
Engine
Rough running
Engine stoppage
Engine runs erratically and misfires
part possible cause
Fuel system fuel supply
vapour locks
contamination
float chamber venting
false air intake due to defective carburetor flange
carburetor icing
Ignition system (shorting cable,
electronic module, charging coil)
Spark plug
malfunction
grounding defect
wrong spark plug connection
Rough running engine
part possible cause
Ignition wiring (assignment fault)
Carburetor fuel supply
contamination in float chamber or float needle
valve
float chamber venting
false air intake due to defective carburetor flange
incorrect synchronization of the carburetor
Engine engine temperature too low
too lean carburetor jetting due to conditions pre-
vailing in intake silencer
WARNUNG
NOTICE
Should one of the above mentioned points occur even
for a short time then a detailed check of the engine is
necessary. The fault needs to be located and correct-
ed.
Unintended engine stoppage by seizing
part possible cause
Oil system oil pressure too low or no oil pressure
oil shortage
contamination
incorrect venting
Oil pump defect
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