Lycoming TEO-540-C1A Maintenance Manual page 114

Problem
Engine will not start
or starts with
difficulty (Cont.)
12-30
Page 84
Table 1 (Cont.)
Fault Isolation Guide
Cause
Internal fuel injector leak
Fuel vaporizing in lines
and fuel injector rail
Found only as follows:
• High ambient
temperatures
• Engine operating for a
long time at low or
idle rpm
Cracked engine mounts or
defective mount bushings
Engine mount bushing
incorrectly installed
Low fuel pressure
Loose ignition leads
Damaged or worn
ignition lead
Engine to airframe
ground strap not
connected or broken
Battery negative cable
loose or faulty connection
to airframe
TEO-540-C1A Engine Maintenance Manual
TEO-540-C1A Engine Maintenance Manual
Corrective Action
Complete the "Fuel Injector
Leak Check" procedure."
1. Operate with cowl flaps in
the FULL OPEN position.
2. Keep ground operation to a
minimum.
3. Operate with boost pump
ON as necessary.
4. Complete a check of the
vent return line for
blockage. Clean if
necessary.
Replace the engine mounts or
bushings.
Check for damage and install
the engine mount bushing
correctly.
1. Look for a blocked fuel
pump filter and inoperative
NTO light.
2. Replace fuel pump or fuel
pressure regulator.
Make sure all ignition leads are
secure.
Ignition Lead Removal
Ignition Lead Inspection
Ignition Lead Installation
Clean terminals. Reconnect
ground strap and preform a
continuity check.
Ensure battery cables are
properly connected and tight.
Preform a continuity check.
© 2018 Avco Corporation. All Rights Reserved
Ref.
73-10
AMM
AMM
73-10
74-20
74-20
AMM
AMM
November 2018