
TROUBLESHOOTING
Problem | Possible causes | Remedy | Page
Engine will not start/hard to start (cranks OK) | Incorrect ignition timing
Ignition problems
• Ignition coil
(7M-GTE)
• Igniter
(7M-GE)
• Distributor
(7M-GTE)
• Cam position sensor
• High-tension cords
Ignition wiring disconnected or broken | Reset timing
Inspect coil
Inspect igniter
Inspect distributor
Inspect cam position sensor
Inspect high-tension cords
Inspect wiring | IG-20
IG-9 or 12
IG-15
IG-9
IG-16
IG-6 or 11
Rough idle or stalls | Spark plugs faulty
Ignition wiring faulty
Incorrect ignition timing
Ignition problems
• Ignition coil
(7M-GTE)
• Igniter
(7M-GE)
• Distributor
(7M-GTE)
• Cam position sensor
• High-tension cords | Inspect plugs
Inspect wiring
Reset timing
Inspect coil
Inspect igniter
Inspect distributor
Inspect cam position sensor
Inspect high-tension cords | IG-7
IG-20
IG-9 or 12
IG-15
IG-9
IG-16
IG-6 or 11
Engine hesitates/poor acceleration | Spark plugs faulty
Ignition wiring faulty
Incorrect ignition timing | Inspect plugs
Inspect wiring
Reset timing | IG-7
IG-20
Muffler explosion (after fires all the time | Incorrect ignition timing | Reset timing | IG-20
Engine backfires | Incorrect ignition timing | Reset timing | IG-20
Poor fuel economy | Spark plugs faulty
Incorrect ignition timing | Inspect plugs
Reset timing | IG-7
IG-20
Engine overheats | Incorrect ignition timing | Reset timing | IG-20