I own a cheverolet joy.It was running fine until now .
Now the car requires serious amount of effort to speed up.
Like Gari baith Gaye hai (Bhari Bhari chal Rahe hai ) .one of my Mechanic told me to change the whole coil and clean the injectors and it will be fine afterwards.
But what the coils have to do with the performance of car plus the car gives numerous jerks going from second to third gear .
Can anyone sort out the exact problem what are the possible reason that the car is running rough and heavy.
