Electronic Ignition System / Magneto Maintenance; Lycoming Electronic Ignition System (Eis); Eis Inspection - Lycoming IO-390-D Series Maintenance Manual

IO-390-D Series Engine Maintenance Manual
IO-390-D Series Engine Maintenance Manual

ELECTRONIC IGNITION SYSTEM / MAGNETO MAINTENANCE

Lycoming Electronic Ignition System (EIS)

1. EIS Inspection

A. Examine all wires connected to the EIS for correct routing, security, clamping,
deterioration, damage, wear, fraying, chafing or breaks. Replace any deteriorated,
damaged worn, frayed, chafed, or broken wires.
B. Examine the EIS for oil leaks. Identify and correct the cause.
C. Examine the EIS manifold pressure line (Figure 1) connection to the manifold pressure
port (Figure 2) for general condition and security.
© 2020 Avco Corporation. All Rights Reserved
March 2020
74-30 - IGNITION SYSTEM –
Figure 1
Electronic Ignition System
Figure 2
Manifold Pressure Port
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