Fuel system question

[TitaniumTT]

For the stock fuel system, unless you follow the FSM procedure to depressurize the fuel system (i.e., idle engine, disconnect fuel pump connector, wait till the engine sputters out), opening up any of the fuel lines to/from the engine SHOULD result in a spray of fuel, even if the car was sitting for weeks, correct?

Reason I ask is yesterday I undid the fuel return line and then the fuel inlet line to the engine w/o depressurizing the system first (Duh, I forgot), and found by accident that neither line was pressurized. Fuel dripped out of both lines, but that was it - no spray. Car was last run just the day before, so the system SHOULD have held pressure for that long.

This typically means that one or more injectors is leaking down, depressurizing the system over time. Until I cracked open those lines, there was no fuel stench under the hood, so no external leaks. I was planning to send out the injectors for refurb/servicing as I normally do whenever I have access to them, but are there any other places the stock fuel system can depressurize itself internally like this? I suppose if my FP regulator was defective, pressure could vent back to the tank via the return line?

[Pete_89T2]

For the stock fuel system, unless you follow the FSM procedure to depressurize the fuel system (i.e., idle engine, disconnect fuel pump connector, wait till the engine sputters out), opening up any of the fuel lines to/from the engine SHOULD result in a spray of fuel, even if the car was sitting for weeks, correct?

Reason I ask is yesterday I undid the fuel return line and then the fuel inlet line to the engine w/o depressurizing the system first (Duh, I forgot), and found by accident that neither line was pressurized. Fuel dripped out of both lines, but that was it - no spray. Car was last run just the day before, so the system SHOULD have held pressure for that long.

This typically means that one or more injectors is leaking down, depressurizing the system over time. Until I cracked open those lines, there was no fuel stench under the hood, so no external leaks. I was planning to send out the injectors for refurb/servicing as I normally do whenever I have access to them, but are there any other places the stock fuel system can depressurize itself internally like this? I suppose if my FP regulator was defective, pressure could vent back to the tank via the return line?