Good way to prevent fuel from coming out? (filter/injectors)

[Kruzen]

Gonna be throwing in some new injectors and a fuel filter. and i'd prefer not to spill fuel all over the place, anyone got a good way to keep it from getting all over the place?

[rs4pro3]

pull the fuel pump relay and start the car, let it runs till it dies, then try starting again. This will depressurize the system. Some fuel will still leak out but wrap the hoses in rags before removing them

[erik325i]

First open up your fuel filler cap to release any fuel pressure. Next clamp off the fuel lines to prevent the gas to pour out while you're changing the parts.

-Erik

[smonkbmw]

pull the fuel pump relay and start the car, let it runs till it dies, then try starting again. This will unpressurized the system. Some fuel will still leak out but wrap the hoses in rags before removing them

+take off the filler cap

(just had injector seals and filter done at a local shop and thats what they did)

[AdamF 88iS]

+take off the filler cap

(just had injector seals and filter done at a local shop and thats what they did)

Taking the cap off will depresurize the evap system, but it will NOT depressurize the fuel lines. You must disable the fuel pump and start the car to get teh fuel pressure out.

[Erick]

Good info.

[Kruzen]

so just unplug the relay under the hood and take off the gas cap, run it till it does and i'm set?

[jlevie]

You really won't have enough fuel come out to worry about. Just stuff a rag under the supply line to the fuel rail when you disconnect it.

[fretburnr]

when i replaced my injectors, i just put 3 rolled up rags under the fuel rail feed / return lines... then backed them off slightly. the rags didn't even get soaked.

most of the fuel came out after removing the rail - even depressurized, there was still plenty in there. running the engine w/o fuel pump is the only way to actually use most of it.

[bddog]

rs4pro3 is correct with the best method. I pull fuse # 11 -same result. -Steve

[Mike325]

The pump thing is what I did. Except I had to have mine running, then pulled the pump relay till it died.

[MR 325]

It's seriously not that big of a deal. It will just evaporate.

[mmmjboner]

delete

[tjmonsen5]

i just replaced my fuel injector O rings a week ago, and i didnt depressurize or anything fancy like that. There was hardly any gas at all, no more than a cup. I just was ready with a rag when i removed the hoses because a little fuel came out. You are going to have more WD 40 and brake cleaner on your engine than gas. Those injectors and fuel rail are HAAARDDDD to remove!!! They get stuck inside the engine or something because i had to pry on them with my biggest screwdrivers which are pretty damn big and they would barely budge. After some WD 40 over night, they came loose.

[DJB]

I removed my injectors this past weekend, twice.

The first time I depressurized the fuel system by pulling the pump relay. There was still some pressure left, and a few ounces of fuel in the rail.

The second time I didn't bother to depressurize, and the amount that came about was almost exactly the same.

Most of the fuel that comes out is in the fuel rail, not the extra volume from pressurizing the lines. And there isn't any easy way to drain the fuel rail before pulling it off.

Bottom line: expect a few ounces of gas no matter what you do.