I'm getting ready to begin working on my engine build in a few weeks by doing a complete tear down of the motor and an inspection of all the components.

My xA hasn't been started in nearly two months since the rod knock developed and in this time the battery has gone completely dead. The battey can be replaced but I do not want to risk damaging the engine any more than what has happened by starting it to depressurize the fuel system. I also do not want to run the risk of dry starting the engine with contaminated oil if there is anything in it, point in case I want to save what I have.

Is there any way the fuel system can be depressurized relatively safely without starting the engine? That is if there is any fuel pressure i the system after sitting for two months. I am running the Perrin fuel rail, if anyone asks.

 

there should be a little twist *** on the fuel line just before the fuel rail *pretty much on generally any fuel injected system*.

the cap on it should be roughly the size of the cap found on your tires for air but it's slightly longer. to depressurize the the line, it works just like a tire fill valve. take your keys or screw driver or whatever and just press down on the center sealing valve. you'll see a small spit of fuel. just keep it down until the spit is done and that should do it.

EDIT: i haven't had to do this before on my own 1nz but it should be on the fuel line just before the fuel rail.

 

use a few rags to keep the fuel spillage down

 

If you are just pulling the motor I wouldn't worry about it . I have swapped injectors without reliving the pressure and have even fixed leaks by removing the rail right after starting the car. As long as you let it sit for a bit and like Ducky^ said have a few rags handy you will be fine. Remember you have the added bonus that even if there is a spill the fuel will have long left the building by the time you start the motor!