When my good one is running on gasoline, he is standing and giving gas it is not extreme but you notice it and at the first start in the morning I have to give full gas so that he first moves and comes forward. But this is only the first time to start and start
When he has switched to gas operation he runs again quite normally no jerking and accepts the gas well.
So now since you asked what it might be (please first check points that can be read without error memory)
