Suzuki Mehran sputtering on CNG but runs fine on petrol — what’s wrong?

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Suzuki Mehran sputtering on CNG but runs fine on petrol — what’s wrong?

My car runs smoothly on petrol, but as soon as I switch to CNG, it starts sputtering and feels underpowered. Sometimes it even stalls at low RPMs. What are the usual causes of sputtering on CNG in Mehran?

Gari Specialist asked on 17 Apr 2025 11:56:19 am

1 Answer

49 views |

Gari Master - on 17 Apr 2025 11:59:06 am

This is common. Possible causes:

Incorrect CNG tuning o r mixture

Weak spark on CNG mode CNG needs stronger spark

Dirty CNG kit o r reducer
Get the CNG kit tuned properly, and consider using iridium spark plugs, which work better with CNG.