Ford Corsar Repair Manual page 193

TROUBLE DIAGNOSES
How to Perform Trouble Diagnoses for Quick
)
symptom,
isn't it ?
SEF235G
and Accurate Repair (Cont'd)
INTERMITTENT PROBLEM SIMULATION
In order to duplicate an intermittent problem, it is effective t o
create similar conditions for component parts, under which the
problem might occur.
Perform the activity listed under Service procedure and note the
result.
h
I
Service procedure
Remove vacuum hose and apply vacuum.
Remove vacuum hose and apply pressure.
Rotate distributor clockwise.
Rotate distributor counterclockwise.
Disconnect exhaust gas sensor harness connector.
Perform self-diagnosis at
2,000
rpm.
Tap or wiggle.
Race engine rapidly. See if the torque reaction of
the engine unit causes electric breaks.
Cool with an icing spray or similar device.
Heat with a hair drier.
[WARNING: Do not overheat the unit.]
Wet.
[WARNING: Do not directly pour water on
components. Use a mist sprayer.]
Turn on head lights, air conditioner, rear defogger,
etc.
Try t o flash timing light for each cylinder.
Target condition
Made lean
Mad. rich
Advanced
Retarded
Suspended
Operation check
Poor electric
connection or
faulty wiring
Cooled
Warmed
Damp
Loaded
Spark power check
Influential part
Pressure regulator
Distributor
Exhaust gas sensor
control unit
Harness connectors
and wires
Control unit
Electric parts
Load switches
Timing light
1
2
',
4
5
6
7
8
Variable factor
Mixture ratio
lgnition timing
Mixture ratio
feedback control
Electric
connection
(Electric
continuity)
Temperature
Moisture
Electric loads
Ignition spark