Are Pakistani users experiencing engine knocking o r rough idling in the Changan Oshan X7?

Home > Gari Forums > Changan Forums > Changan Oshan X7 Forums > Changan Oshan X7 Engine Forums

Are Pakistani users experiencing engine knocking o r rough idling in the Changan Oshan X7?

Some Oshan X7 owners in Pakistan have reported irregular engine noise, especially at low RPMs o r during cold starts. Is this due to low-quality fuel, improper ECU tuning, o r a mechanical fault?

Lubaba asked on 06 Aug 2025 17:57:35 pm

1 Answer

24 views |

Car Mechanic Expert - on 06 Aug 2025 18:03:03 pm

Yes, some owners have reported:

Engine knocking at low RPMs

Rough idling during cold starts

Possible reasons:

Low-octane fuel below RON 92 o r 95 leading to pre-ignition

ECU not optimally tuned for Pakistani fuel grades

In rare cases, mechanical valve timing issues

Conclusion: The issue is mostly related to fuel quality and engine calibration, not a widespread mechanical fault.