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View Full Version : vx ss fuel pressure????



HINDZY
October 11th, 2007, 07:33 PM
just wondering if anybody knows the stock fuel pressure on a 2001 vx ss commodore?

thanks

macca_779
October 11th, 2007, 11:59 PM
58 psi is what its meant to be mate. But some guys have seen it move around a bit when the system is under demand.

Tordne
October 12th, 2007, 07:50 AM
I put a fuel pressure sender unit on the end of the rail and I've experienced as much as a 10psi or so swing in pressure between low and high vacuum.

rally1
October 12th, 2007, 01:27 PM
400 kpa (58 psi) + or - 50kpa (7 psi) at 12.5 volts + or - 0.1 volt, I have had a few VX fuel pumps drop to around 40 psi at WOT, making them run very lean, after fitting new pumps they where stable at around 54-58 PSI at WOT.