With a puddle of petrol in the inlet manifold, the car is massively over fueling.

Can be defective injector or wiring, which causes it to be open all the time.
Or a leak in the exhaust leading to false readings from the Oxygen sensor, or a defective oxygen sensor. I have seen a fuel pressure regulator that was blocked and that lead to a fuel pressure more than 2 times what is normal.

Take it to a professional before you kill the engine.
After repairs are finished change the oil and oil filter. There's probably a lot of petrol in it.