Pelican Parts Forums - when I press the accelerator to go faster is starts to jerk?

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Hi there. Im from south africa and I have a 89 e30 318i. M40 motor
I have just rebuilt the eNtire motor, rebore 20 tho. I had a problem with a rough idle and changed the idle valve, seem to sort the problem out but wen I drive car runs smooth and wen I press the accelerator to go faster is starts tp jerk and once I leave the pedal n press again it accelerates proplly. What can b the cause of this?

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This post was auto-generated based upon a question asked on our tech article page here:

It could be the valve timing is not correct, or the throttle position switch/sensor is faulty or you have a worn airflow meter

- Kerry