Hi
I have 06 cultus.
Early morning when I start the car, it gives black smoke and the RPM is around 1500. After 1,2 minutes, the RPM rises to 2000 (choke) and the smoke vanishes.
There is no smoke for the rest of the day.
But after 1000-1500km the engine oil color becomes very dark (due to carbon).
I want to know what could be the problem and how do I fix it?
Mechanic says its butterfly but why not whole day and why in the early morning only.
Edit1: So the engine oil level is increased (by half a litre I guess). I talked to my mechanic over the phone and he told me that non-combusted fuel is being added to the Engine oil. Is that possible? The engine oil is again becoming black. He is saying that I should install a kabli carburetor. I cant spend that much and thinking about smaller jets? Anyone did this step?
Update: Went to Mechanic and showed him high level of oil. He removed it a bit and gave it to me in a can so I can top up if it is less in the morning. But he says that the color is fine and I should drive it. So I am going to pass this issue for now. Since in rather warmer mornings, the black smoke issue is getting less n less.