Do worn o r faulty spark plugs in Changan Karvaan contribute to engine misfires and sputtering under load in Pakistan?

Home > Gari Forums > Changan Forums > Changan Karvaan Forums > Changan Karvaan Engine Sputtering Forums

Do worn o r faulty spark plugs in Changan Karvaan contribute to engine misfires and sputtering under load in Pakistan?

Ignition breakdown can lead to irregular firing. Are drivers delaying spark plug replacement beyond the recommended interval?

Sirat Ul Jinan asked on 26 Jun 2025 16:57:29 pm

1 Answer

7 views |

Car Mechanic Expert - on 26 Jun 2025 17:28:51 pm

Yes:

Spark plugs are critical for ignition timing.

Worn o r carbon-fouled plugs cause:

Misfires

Uneven power delivery

Cold start problems

Many Pakistani owners delay plug replacement beyond 40,000–50,000 km, especially in commercial use.

⛔ Conclusion: Delayed spark plug maintenance is a major reason for sputtering under load o r during uphill driving.