Toyota Land Cruiser 1988 Repair Manual page 248

IGNITION SYSTEM
-Troubleshooting
IG-3
TROUBLESHOOTING
Problem
Possible cause
Remedy Page
Engine will not start/ Incorrect ignition timing
Reset timing IG-11
hard to start
Ignition problems
(cranks ok)
•
Ignition coil Inspect coil IG-7
• Igniter
Inspect igniter IG-7
•
Distributor Inspect distributor IG-7
•
High-tension cords Inspect high-tension cords IG-6
Ignition wiring disconnected or broken Inspect wiring
Rough idle or stalls Spark plugs faulty Inspect plugs IG-6
Ignition wiring faulty Inspect wiring
Incorrect ignition timing Reset timing
IG-11
Ignition problems
• Ignition coil
Inspect coil IG-7
• Igniter
Inspect igniter IG-7
• Distributor
Inspect distributor IG-7
• High-tension cords
Inspect high-tension cords IG-6
Engine hesitates/
Spark plugs faulty Inspect plugs IG-6
poor acceleration
Ignition wiring faulty Inspect wiring
Incorrect ignition timing
Reset timing IG-11
Engine dieseling Incorrect ignition timing
Reset timing IG-11
(runs after ignition
switch is turned off)
Muffler explosion Incorrect ignition timing
Reset timing IG-11
(after fire) all the time
Engine backfires Incorrect ignition timing Reset timing IG-11
Poor gasoline mileage Spark plugs faulty
Inspect plugs IG-6
Incorrect ignition timing Reset timing IG-11
Engine overheats Incorrect ignition timing Reset timing IG-11