quick fuel pressure question
Thread Starter
Intermediate
Joined: Apr 2009
Posts: 47
Likes: 0
From: Boca Raton Florida
quick fuel pressure question
I took the injector swap journey today, and have installed new Bosch III's. I pressure tested the system with the key on, and there were no leaks. Is the fuel pressure at this point the same fuel pressure of the engine while its running? I just want to make sure that no leaks now means no leaks later. Thanks for the help.
Racer
Joined: Nov 2005
Posts: 456
Likes: 3
From: Sumner Texas
You are wise to check for leaks before starting the engine. Yes, with the key on the pressure SHOULD be at standard rail pressure, but if it were me I would connect a fuel pressure gauge to the fuel rail with the key on to make SURE!
Some years ago the neighbor of a guy I worked with burned his Vette to a crisp and almost took his house with it doing exactly what you're doing. It is IMPORTANT to make sure you are leak free under pressure.
Doc
Some years ago the neighbor of a guy I worked with burned his Vette to a crisp and almost took his house with it doing exactly what you're doing. It is IMPORTANT to make sure you are leak free under pressure.
Doc
Safety Car
Joined: Jan 2008
Posts: 3,939
Likes: 1
From: Vero Beach Florida
You are wise to check for leaks before starting the engine. Yes, with the key on the pressure SHOULD be at standard rail pressure, but if it were me I would connect a fuel pressure gauge to the fuel rail with the key on to make SURE!
It is IMPORTANT to make sure you are leak free under pressure.
Doc
It is IMPORTANT to make sure you are leak free under pressure.
Doc
Melting Slicks
Joined: Mar 2008
Posts: 2,141
Likes: 76
From: Santa Maria, CA
You should be good. Once you've completed the work, disconnect the vacuum line to the regulator and plug it. With the engine running, check again for leaks. There won't be any but that is the max pressure to the rails and injectors.
Thread Starter
Intermediate
Joined: Apr 2009
Posts: 47
Likes: 0
From: Boca Raton Florida
Thanks guys, by the way, i used this on the fuel line nuts to ensure a proper fit, and tightened them good. I can't wait to start it up tomorrow! I did the whole thing without removing the runners, or the throttle body coolant hoses. It was difficult, but it can be done. I am only 16 too. 
