Cultus giving v bad average and smell from exhaust

[pwuser156607437486]

Salam!
I have 2007 cultus EFi. Recently it started giving very bad average around 7/8 in city. Gari jab subah on karo to smoke nikalti hai and exhaust se hamesha smell ati hai. Oil change sept me karwaya tha although tuning nae just oil he change karwaya tha. Fan gari ka Auto nae hai direct hai and ek or bat gari k meter me check engine ki light bhi ON hai but wo oil change se pehle ki hai even after changing oil wo still ON hai.
Kindly help kardein k kya kuch karwaya jaye k gari ke engine was maslay saray khatam hojain. Kafi tang hora hune. Or ye maslay abhi 7/8 maheeny se shuru hue hain.
From rwp

[Hassan1991]

Wailaikum Assalam
You already knew your problems.
Make the fan work auto.
Scanned it for error code and sort it out.

[pwuser156607437486]

But average or exhaust ka smoke wo kese theak honge brother.

[Hassan1991]

By doing what i said.

[usman_arooq2]

When fan is direct and thermostat valve is not present, it takes very long for engine to reach optimal operating temperature

Is condition mein engine har time choke (rich fuel mixture) py hota so u end up with carbon deposits in engine (valves, valve seals and tappets etc) & sludge.

And increased wear & tear.

So first of all solve ur cooling system issues and make it work as per factory spec

kisi achy efi electrician sy engine light k code scan karwaen, yaha post karyn k kya codes aa rahy then u can get further guidance.

Spark plugs would also be black from soot so better replace them after making fan automatic.

[pwuser156607437486]

Ok brother thanks alot, stay blessed and happy ramadan. Will let you know.

[turbo_charge]

First of all fan auto krwain and thermostat valve dalwian coolant line mein..2ndly scan krwain gari ko ..and also test fuel injectors for leaking..a leaking fuel injector shall be wasting fuel and smell ati rahygi exhaust sy.. exhaut black b hoga ander finger dal k check krain..