My father has xli 2006( Petrol + cng) but since last week, car feels Poor acceleration(ghuti ghuti)
I took car to mechanic who did tuning which included Cleaning of injectors,replacement of spark plugs,new air filter, cleaning of throttle body with petrol,adjustment of RPM etc.but at the end of the work, similar noise, almost same "ghuti ghuti" then he told me finally that this problem is due to STAP or its wiring and emulator etc. so he removed and cut off connection s near plugs. Now car is 90% better but still some ghuti ghuti even on petrol and Check Engine Light has come on Dashboard
My question is that when i am not using cng so how stap is interfering in car ghuti ghuti(poor acceleration). Mechanic told check with cng wala and if he could not solve then we will change Engine spark plugs coils.
Even after spending Rs. 3,500 I am still puzzled what is the issue, where am I lacking. Please advise how to solve this gjuti ghuti issue