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