Hey Guys,
With some great help from the forum, I've just changed out my fuel pulsation damper. Before putting the whole business back together, I figured it wise to pressurize the fuel system to check for leaks. I followed the procedure where you jump the FP term to ground in the diagnostic port. When I turn the ignition on, I hear a pretty loud hissing in the engine compartment that I cannot manage to localize. But no leaking fuel/fuel smell, or any other outward symptoms. Is this normal? Is it just another system that is normally masked by other noises? I don't want to get her all put back together and then find that I've missed something.

Your experience, input and advice are greatly appreciated.

Cheers,
Tom

 

Its probley the fuel flowing back threw the return line!

 

Yes! That's exactly what it is--I can feel it humming through the lines.
Thanks much!

Cheers,
Tom