On a 1998 and up leaking fuel could be from Pulse Damper's Vacuum hose, pull it off and check it for fuel.
Or a leaking injector.
To test for leaking injector:
Turn key on and off 4 times, then leave it on
Press gas pedal to the floor and hold it down all the way, if computer see 0 RPMs, and throttle is wide open(gas pedal to the floor) it will shut off fuel injectors
Try to start engine, hold gas pedal down all the way
It should not start, it should not even fire a little
If it does start or fire then fuel is leaking in
Turn it off
Now find the Coil pack, it will have a 4 wire connector, unplug it.
repeat above test, 4 times on and off, gas pedal to the floor
Crank engine for a 5 count, 1, 2, 3, 4, 5
No spark so won't start of course.
Now pull out each spark plug, wet spark plug(s) will be from leaking injector cylinder