My car (Mitsubishi Lancer 2004 1.3L) jerks on second gear when I slow down while on second gear and then want to accelerate back. This happens severely after I cross a speedbreaker in second gear and then accelerate or when turning in 2nd gear and then speed up. The acceleration is really lousy and I have to press the pedal to the maximum and even then the acceleration is creepy mostly. This happens more severely in the morning or when the car is started from cold.
So far I have done the following but no use.
1. Changed spark plugs.
2. Serviced throttle body and the relevant sensors.
3. Done tappet adjustment etc.
4. Changed fuel pump.
None of the above helped in sorting out the issue. What can be wrong with the car, and who to consult for this issue in Islamabad?
