P0316 – Misfire Detected on Startup (First 1000 Revolutions)
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Symptoms
- Rough idle
- Hesitation
- Poor acceleration
- Hard starting
- Check engine light
Causes
- Worn spark plugs
- Faulty ignition coils
- Fuel injector issue
- Vacuum leak
- Low compression
Diagnosis
- Check misfire counters
- Inspect spark plugs
- Test ignition coils
- Check injector pulse
- Perform compression test
Repair
- Replace spark plugs
- Replace faulty coils
- Clean or replace injectors
- Fix vacuum leaks
- Repair compression issue