I have a Ford Galaxy N reg 2.0lt petrol which has a fault. A few months ago we started to notice the engine hesitate when accelerating. The problem has recently started to cause the engine to mis and jump quite violently. I have checked all ht leads for sparks and they have sparks. Does anyone have any ideas what could be causing this fault. BTW when we floor the accelerator there is no blue smoke coming from the exhaust so Im hoping it is not a major engine mechanical fault. Please help!!!