Ford LSG 875 User Manual

2-05
IGNITION SYSTEM
2-05
DIAGNOSIS AND TESTING (Continued)
Checkout
l Visually inspect the engine compartment to en-
sure all vacuum hoses and spark plug wires are
properly routed and securely connected.
l Examine all wiring harnesses and connectors
for insulation damage, burned, overheated,
loose, or broken conditions.
l Be certain the battery is fully charged.
l All accessories should be Off during diagnosis.
Equipment
Obtain the following test equipment or an
‘equivalent:
l Spark Tester, Special Service Tool D81P-
6666-A.
l Digital Volt-Ohmmeter Rotunda 014-00407.
l Small straight pins (2).
Notes
l All wire colors referred to in this part relate to the
colors of the ignition module wires. When work-
ing with a wiring harness, the wires must be
traced back to the ignition module for proper
color identification.
l When instructed to inspect a wiring harness,
both a visual inspection and a continuity test
should be performed.
l When making measurements on a wiring har-
ness or connector, it is good practice to wiggle
the wires while measuring.
TEST STEP
1 1 START CIRCUIT
l Connect spark tester between ignition coil wire and
engine ground.
l Crank engine using ignition switch.
SPARK
TESTER
/
A6025C
RESULT
Sparks
-
No Sparks
ACTION TO TAKE
GO to 2.
MEASURE resistance of
ignition coil wire.
Replace if greater than
5,000 ohms per inch.
INSPECT ignition coil for
damage, carbon
tracking.
CRANK engine to verify
distributor rotation.
GO to 5.

Ford LSG 875 Specifications

General

Brand	Ford
Model	LSG 875
Category	Engine
Language	English