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Home >> Kia >> 2021 >> Forte EX >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - 2.0L >> Spark Plug >> Troubleshooting
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Spark Plug: Troubleshooting

Symptom Suspect Area Remedy
Engine will not start or is hard to start (Cranks OK) Ignition lock switch Inspect ignition lock switch, or replace as required
Ignition coil Inspect ignition coil, or replace as required
Spark plugs Inspect spark plugs, or replace as required
Ignition wiring disconnected or broken Repair wiring, or replace as required
Rough idle or stalls Ignition wiring Repair wiring, or replace as required
Ignition coil Inspect ignition coil, or replace as required
Engine hesitates/poor acceleration Spark plugs and spark plug cables Inspect spark plugs/cable, or replace as required
Ignition wiring Repair wiring, or replace as required
Poor mileage Spark plugs and spark plug cables Inspect spark plugs/cable, or replace as required