Mitsubishi MOTORS 3000GT Bedienungsanleitung Seite 494

ENGINE ELECTRICAL - lanition Svstem
INSPECTION
SPARK PLUG
Check the plug gap and replace if the limit is exceeded.
Standard value: 1.0-l .l mm (.039-.043 in.)
Limit: 1.3 mm (.051 in.)
Caution
1. Do not attempt to adjust the gap of the platinum plug.
2. Cleaning of the platinum plug may damage the plati-
num tip. Therefore, if carbon deposits must be re-
moved, use a plug cleaner and complete cleaning with-
in 20 seconds for protection of the electrode. Do not
use wire brushes.
SPARK PLUG CABLE
(1) Check cap and coating for cracks.
(2) Measure resistance.
Limit: Max. 22 ksZ
IGNITION POWER TRANSISTOR
NOTE
An analog-type circuit tester should be used.
No. l-No. 4 coil side
(1) Connect the negative (-) terminal of the 1.5 V power supply
to terminal (4) of the ignition power transistor; then check
whether there is continuity between terminal (13) and termi-
nal (4) when terminal (3) and the positive (+) terminal
are connected and disconnected.
N
Connect the (-) probe of the circuit tester to terminal (13).
Terminal 3 and (+) terminal
(2) Replace the ignition power transistor if there is a malfunc-
tion.
No. ~-NO. 5 coil side
(1) Connect the negative (-) terminal of the 1.5 V power supply
to terminal (4) of the ignition power transistor; then check
whether there is continuity between terminal (12) and termi-
nal (4) when terminal (2) and the positive (+) terminal
are connected and disconnected.
NOTE
Connect the (-) probe of the circuit tester to terminal (12).
O T E
Terminal 13 and terminal 4
Connected
Unconnected
I
Continuity
No continuitv