Best way to depressurize the fuel rail?

["Turbo-T"]

I'm about to install my new fuel pressure gauge and fuel pressure regulator.

I am aware the fuel rail is under pressure and that there is a schrader valve to relieve the pressure.

How do you prefer to relieve pressure?

I am guessing if I push in on the shrader valve, fuel is going to spray everywhere....?

How can I relieve pressure without making a big mess? Or is it not possible?

Thanks!

 

[Madcat455]

My pressure will drop off after a bit by it's self.

If it hasn't been run in a while, I'd be surprised if there was much pressure in the line. I had no problems replacing my injectors after the car sat overnight... just some spillage, but no pressurized spray.

 

[87NAT]

Its not going to be much. Take a philips screwdriver and wrap an old towel around it real good so that the end of the rail is covered completely. Then just push it in. It wont be alot that comes out. If you want put a towel on the intake right below it also.

 

[87NAT]

Maybe safety glasses too...

 

[jcawley3]

I unpluged fuel pump....let motor die.....then put shop rag under rail and took the valve out....very little gas came out

 

[chrisgarrett]

I put a couple of paper towels under and around the valve and use a schrader tool to slowly loosen the valve. It only spurts for a second or two.

 

["Turbo-T"]

Thanx, just tried the screw driver method, car had been sitting overnight so no fuel came squirting out.

Not too fond of trying to remove a schrader valve w/pressure on it, was trained when I do this w/tires to let the air out first.

 

[salvageV6]

They make a gauge you can screw quickly onto the rail without leaking, (usually), and then it has a button on the side with a small hose that will relieve the pressure into a small can.

I have one from Actron.

I never use that feature however I just use a rag and something to press on the valve. Not much comes out unless you have just shut down the car.

 

[DailyDrifter]

Even though you depressurized it already, next time you can hook a vacuum pump to the regulator, that will pull up on the diaphram and let the pressure escape to the return line.

 

["Turbo-T"]

Even though you depressurized it already, next time you can hook a vacuum pump to the regulator, that will pull up on the diaphram and let the pressure escape to the return line.

Oh, cool. Thanx for the tip. I happen to have a vac. pump in the tool box.

 

[DailyDrifter]

no prob, always there to help..........if i like you

 

[rodman99999]

no prob, always there to help..........if i like you

Heh, heh, heh- Good tip Drifter!! I like the philosophy too !!