I am facing some issue with lancer i recently purchased. its 1300cc on petrol, there was cng long time ago but removed back in 2011.
the problem is when i press accelerator car hesitate to respond as long as rpm remains under 2- 2.5k above this there is no hesitation and car move and picks up speed normally. on higher rpm there is no issue. this hesitation occurs in every gear but can be felt mainly on 1st 2nd and 3rd gear when rpm is low.
there is no issue of idling. and rpm remains calm when car is idle on AC and without ac.while turning steering rom changes on full turn. but otherwise stays idle.
so far i have cleaned airfilter (it was dirty), cleaned throttle body with carburator cleaner spray.
also one thing i noticed that air intake is closed by default from company. some of the lancer engine i have seen has open air intake near grill area. ( i am unable to understand why my car has closed air intake.)
i have made a checklist to check fuel filter fuel pump, coils and injectors and catalytic converter in couple of days, but i would love to know if any expert can provide his valuable feedback and opinion. please see picture about intake open and close to get the idea what i am talking about.
Also if any one of you know some cheeta mechanic in karachi who can understand this type of issues and get to the root cause without trying all jugaars and trial errors.