Hi bros,need some advice on my car jerking issue,my car is a 9 year old toyota corolla fielder with 34k mileage Previously it has jerking issue during acceleration(only jerks between 2000-2500rpm),after I went to a workshop and changed the fuel pump/fuel filter/fuel regulator/gas pedal sensor,the issue was solved However,these 2 days,I started ferrying my friends,one of them is 160kg and the other is around 85kg.When I accelerate on slopes or to overtake,the car will jerk(between 2000-2500rpm again)and lose power until I release the gas pedal,and accelerate again When my 160kg friend got off the car,the car has no issues and got the power again,I would like to ask if heavy weight could cause the jerking issue? thanks bros