Archived Lift pump pressure

[Gonzo 1066]

I just installed a lift pump pressure gauge in a 2002. It seems to act diffrently than the one on my 2001. It will build pressure (15psi)when I bump the key and then sometimes it drops off to 1or 2 psi and stay there when the key is bumped. The pump also sounds as though it wont maintain prime. Shouldnt it keep pressure whenever the engine is running?

 

[FourBarR]

should maintain fuel pressure when engine is running. some pumps are better than others. new pump should be 15-16 at idle. 12- 13 at 70mph maybe 9-10 at wot. on my forth pump at 332000 km.

 

[Gonzo 1066]

Thanks for the quick reply. The damn thing just sounds funny!!