Removing your FPR

[JwUoNoG]

I was just wondering, when you remove your FPR, do you just pull it off, and dodge the fuel that is spraying out?

I prefer to pull the MPI fuse, and crank the engine over a few times in the car. This lowers the fuel pressure inside the fuel rail, and fuel doesn't spray all over the place.

Is there anything wrong with this method? Does it hurt anything?

 

[daren_p]

When I remove mine I just pull the connector off at the fuel pump, then turn the car over for about 10 seconds. By doing this is gets ride of all fuel pressure & when you remove the fpr or injectors there will only be a small amount of fuel that dribbles out.

 

[psychlow]

Is there anything wrong with this method? Does it hurt anything?

Nope, as long as you're not doing it a bunch - and I'd say it's probably the preferred method, other than maybe using a logger to pulse injectors so you don't have to crank it at all.

You may want to change the oil if you do this a few times in a row, though, because you'll end up with gas sinking down past the rings and thinning out your oil.

 

[steve]

I disconnect the fuel pump connector and let the car start, if it does

Since the injectors are powered off the MPI circuit, as is the ECU, pulling the MPI fuse isn't going to do much. The injector have to open to let any fuel out.

Steve

 

[Quasimondo]

There should be a pressure relief bolt by the fuel filter. It's a bolt on top of the banjo bolt. Loosen that up to relieve the pressure so the fuel rail doesn't blow a wad all over you when you pull the regulator.

 

[steve]

Loosen that up to relieve the pressure so the fuel rail doesn't blow a wad all over you when you pull the regulator.

So instead the fuel system blows it's wad over there by the battery.

The FSM procedure is to disconnect the fuel pump connector and start the car to bleed off any pressure.

Steve

 

[psychlow]

Since the injectors are powered off the MPI circuit, as is the ECU, pulling the MPI fuse isn't going to do much. The injector have to open to let any fuel out.

This is true.

If I'm going to crank the car to relieve pressure, I normally just unplug the coil pack (at the triangle plug... don't just unplug the wires) and the fuel pump. Just personal preference.

 

[flinguist]

I disconnect the fuel pump connector and let the car start, if it does

Since the injectors are powered off the MPI circuit, as is the ECU, pulling the MPI fuse isn't going to do much. The injector have to open to let any fuel out.

Steve

I just installed an AFPR, and that's what I did. No fuel spraying out, just a little dribble.

 

[BlackbirdOfPrey]

Opening your fill cap helps too, it helps relieve any possible pressure build up in the tank. Other than that I always undo the connector at the pump and crank for a few seconds, works like a charm.