The fuel leak is probably from the hose that delivers the high pressure fuel to the injectors, they have a history of leaking, several reports on TM. If it has crimped fuel hose clips they should be replaced with proper reusable fuel hose clips, not just ordinary worm drive clips There are two fuel injectors, one for each cylinder on the head. The throttle body only meters the airflow to the engine, not like a carburettor.
