Hi, 1.8t 190 here. First thing in the morning when i start my car from cold it starts but stutters and kind of shakes the whole car for 1 maybe 2 seconds. Sounds and feels horrible, then all is fine and drives perfect. Start from warm is just as it should be. also i have a coolant leak, can see damp and stains where i park at work and the resivior was worryingly low this morning, ie.... nowhere near the min mark! Any ideas please?!