What is acceptable for fuel pressure on a blower motor?

I've been chasing a fuel pressure issue and put a mechanical guage on the motors. stbd motor reads 6 lbs WOT. Port reads 4 lbs and will drop to 3.5 after a while.

Is 3.5 lbs WOT too low or is this acceptable?

Thanks for the previous replies!

Kurt

Mine run 8 to 8.5lbs at idle and 6lbs at WOT

3 lbs. is the minimum, if it is dropping on prolonged runs, you may have a volume problem.

6 lbs. here.

Same here.......3 & dropping would scare me

A blower motor should never drop below 7 - 8 Lbs at WOT