Why does my Suzuki Mehran emit a lot of smoke from the exhaust?

Home > Gari Forums > Suzuki Forums > Suzuki Mehran Forums > Suzuki Mehran Emissions Issues Forums

Why does my Suzuki Mehran emit a lot of smoke from the exhaust?

I’ve noticed that my Suzuki Mehran releases thick, blue smoke from the exhaust, especially when I accelerate. What could be causing this issue, and how can I fix it? Is it related to the engine, oil, o r something else?

Gari Specialist asked on 16 Apr 2025 17:49:42 pm

1 Answer

20 views |

Gari Master - on 16 Apr 2025 17:52:36 pm

Blue o r black smoke from the exhaust can indicate different engine-related issues:

Blue smoke: This usually means that oil is burning in the engine. This could be due to worn-out piston rings, valve seals, o r an issue with the PCV Positive Crankcase Ventilation valve.

Causes: Worn-out engine components allowing oil to seep into the combustion chamber and burn.

Solution: The first step is to check the engine oil level and quality. If oil levels are high o r dirty, changing the oil and filter may help. If the problem persists, you may need to replace the piston rings o r valve seals, which is a more expensive repair.

Black smoke: This typically means that the engine is burning too much fuel.

Causes: A clogged air filter, faulty fuel injectors, o r incorrect fuel mixture due to malfunctioning sensors.

Solution: Start by inspecting and replacing the air filter Rs. 500–1,000, and clean o r replace the fuel injectors Rs. 2,000–4,000. If the issue persists, the fuel pressure regulator o r air-fuel ratio sensor may need attention.