Car in question is Suzuki Mehran Efi. I have after market AC installed but the same one which comes from company. Car is 13000 km driven. It was running fine with and without AC. But from last night when I turn on the AC the car starts jerking at initial pick-up but runs ok once its gets moving but it doesn't happen all the time. It is only when AC is just turned on, after 2-3 minutes drive the car drives ok even on initial pick-up. Also when I turn off AC after usage (4-5 mins before I reach home) the car does the same jerking on slow speed.
I should mention that I haven't got my car tuned since it's 5000km check-up, as the car was working fine. And it is petrol driven. What could be the issue? Tappet adjustment?
Regards,
Zia