C20XE doesn’t work anymore!!!

On the highway suddenly the yellow motor lamp started to shine, and the engine hardly took any gas (as if it was only running on 2-3 pötten)!!! He ran 101 km and the previous owner said that the timing belt was changed at 98000. When I stopped, it squirted at the front right out of the wheel box. (Water pump?) Had left small water puddle on the ground. If the water pump had become defective, then the timing belt jumps down immediately? How should I proceed, because the Mo it sounds like he’s in the ass!!! BIDDE gives me a few tips so the road will have me again!!!