hi guys,
well had the plugs and coil pack checked all ok no oil in wells bone dry.when i start the car first thing all ok will run for about 10 mins ok then the engine will start to missfire slightly.another few mins and it drives like a tractor no power everything shudders as if it is only going on 2-3 cylinders.if i am traffic lights i have to put auto in 1st to move. any ideas driving me mad.