fuel rail leaking or on the fuel side of rail there is a "O" ring in line to seal it from leaks. if it is leaking, release fuel pressure from system, take out main fuel line to fuel rail and replace "O" ring on end of line.
If it has one, it will be located on the fuel rail.
first of all relieve fuel pressure at schrader valve on to back of engine, undo all wires and hoses, take off intake on top pf engine, remove the 4 bolts holding injectors on, remove electrical connectors from injectors, remove inlet line to fuel rail. Do not loose or drop O ring from fuel inlet line. just did my intake gaskets on my 3.1 that's how I know, I dropped my O ring and had to by another cause the fuel was pouring out!!
Have to remove the fuel rail's to get to them.
under top plenum on 3.1 engine at intake manifold.
It's on the fuel rail on the engine
the fuel pressure regulator is on the top front fuel rail facing the engine in front,, it is on the right end of the rail, it has a hose to it and it is round. it is held on by one bolt and the fuel line. good-day !
see if your spark plug are wet, change oil, with new filter.
The fuel filter is located on the frame rail on the drivers side just before the fuel tank.
the fuel filter is on the drivers side frame rail under the drivers door on the inside of the frame rail its got 3 fuel lines running into it
Yes on both lines one go to the gas rail the other to the regulator
It's located on right frame rail near the fuel tank