Where does the fuel line connect to the engine?

Before doing ANYTHING, it is VERY IMPORTANT that you depressurize the fuel system, and be sure the engine is COLD COLD COLD before removing any lines.
The fuel pressure regulator should have one vacuum line and three fuel lines connected to it. (Some have an electrical connector instead of the vacuum line, but same idea.)
AFTER DEPRESSURIZING THE SYSTEM, with engine COLD, carefully disconnect the vacuum line (or electrical connector), then SLOWLY loosten and remove all three fuel lines, noting how they are connected. Replace all grommets & gaskets with new, then Install the fuel lines to the new regulator, EXACTLY as they were on the original, tightening the fittings to torque specifications provided for your vehicle and engine. Reconnect the vacuum (or electrical) connection, then repressurize the fuel system WITHOUT STARTING THE VEHICLE. With the ignition ON, watch for any sign of leaks. If there are ANY signs of leaks, stop them before starting the vehicle. DO NOT START THE VEHICLE IF THERE ARE ANY LEAKS, AS THERE IS A DANGER OF STARTING AN ENGINE FIRE.
Check for proper fuel rail pressure, and be certain to re-check your work within 100 miles to assure that there are NO LEAKS.
If you are unfamiliar with depressurizing or repressurizing a fuel injection system, PLEASE REFER THE WORK TO A QUALIFIED TECHNICIAN..

It depends on the year, make and model of your car. Typically tge vacuum lines connect to the intake manifold and tge fuel lines connect to the fuelfilter, carburator,fuel pump or fuel inhection. I hope this helps

go to auto zone get kit for it.

Not sure what your question is, but the fuel pump runs when the ignition is turned on.

There are no diagrams that will show you the fuel lines that I am aware of. The service manual assumes that you allready know that the fuel line runs from the fuel tank to the engine. There are 2 quick connects in the short plastic hose that connects to the fuel filter/regulator assembly at the fuel pump module. One end connects to the fuel filter and the other connects to the main line that goes to the engine. It is VERY simple. There is no fuel return line from the engine back to the tank on your vehicle, so there is only one fuel line and absolutely no way to mix it up with anything else.

IN THE GAS TAKE BY DROPPING THE TANK OR UNDER THE BACK SEATS IF IT THERE YOU WILL TO REMOVE THE SEATS OUT

2.4L ENGINES DONT HAVE TEST PORT ON THE FUEL RAIL.YOU HAVE DISCONNECT THE FUEL LINE QUICK CONNECT FITTING AT THE POINT WHERE THE FLEXIBLE FUEL FEED HOSE CONNECTS TO THE RIGID METAL LINE LEADING BACK TO THE FUEL TANK. YOU WILL FIND THIS FITTING BEHIND THE ENGINE NEAR THE FIREWALL.CONNECT THE SPECIAL ADAPTER HOSE TO THE LINES AND CONNECT A FUEL PRESSURE GAUGE TO THE ADAPTER HOSE. FUEL PRESSURE SHOULD BE 41 - 47 PSI. BECAREFUL MAKE SURE FUEL PRESSURE TESTER CONNECTIONS TIGHT DONT LEAK.GAS WILL SPRAY EVERYWHERE CAUSE FIRE.

follow fuel lines from gas tank to engine are any lines crushed. next replace fuel filter. check to be sure fuel filter is installed in right direction. arrow on fuel filter should point toward engine. double check that fuel lines are connected properly, some fuel pumps have three fuel lines one for pressure , one for return and one vent line.last possible bad fuel pump from factory

Fuel FIlter - Removal

1. Relieve fuel system pressure.
2. Remove or disconnect the following:
   Negative battery cable Fuel lines from the fuel filter Fuel filter
   

To install:

1. Install or connect the following:
   Fuel filter and tighten the bracket bolt. Note the fuel flow directional arrow. Fuel lines to the fuel filter. Negative battery cable
2. Start the engine and inspect the fuel filter connections for leaks.
   

1. Before servicing the vehicle, refer to the Precautions section.
2. Relieve fuel system pressure.
3. Remove or disconnect the following:
   Negative battery cable Fuel lines from the fuel filter Fuel filter
   

To install:

1. Install or connect the following:
   Fuel filter and tighten the bracket bolt. Note the fuel flow directional arrow. Fuel lines to the fuel filter. Negative battery cable
2. Start the engine and inspect the fuel filter connections for leaks.

Fuel filter is incorporated in fuel pump assembly in fuel tank.

Hope this help.

some fuel filters are mounted on the underside of the vehicle, along with the fuel line and on the inside of the frame to protect form rupture during a collision. some are where the line come up from the frame and behind the engine and again following the fuel line. lastly they have been mounted near the top of the engine where the fuel line connects to the engine. follow the fuel line and you will find the filter.