alpha_1

i just got done putting a gsr motor into my hatch. with my old single cam motor the fuel pressure was reading 50 psi and i have been trying to lower the fuel pressure to 40 psi on the stock fuel regulator. now with the gsr stock fuel pressure regulator its reading 60 psi. DAM IT.

-i have checked for leaks in vaccum lines and have followed the haynes way of releasing fuel pressure. NOW I CAN'T FIND ANYWAYS TO LOWER FUEL PRESSURE.

-when i take off the vaccum line for the fpr. the pressure goes up to 65 psi. can it be my fuel return line and if it is how do i fix the problem. also i changed the fuel filter with a new one and i have a walbro 255 intank fuel pump.


PLEASE HELP!!!!!!!!. HAVEN'T SOLVED THIS PROBLEM FOR 4 MONTHS NOW WITH THE SINGLE CAM AND WILL NEVER IF DON'T FIGURE THIS OUT. FLOODING MOTOR WITH DSM 450'S EVEN AT 50 PSI ON FPR. NO BOOST TOO MUCH FUEL .

turboteg2nv

you need to drill out the fuel pressure regulator. check out http://theoldone.com/articles/regulator/

DaX

iTrader: (1)

Get an adjustable regulator that can be adjusted down [not the b&m].

PrettyLude

get an aem or sx or aeromotive

alpha_1

please help me solve this problem. i have a b&M fpr but the lowest it will go is 50 psi. how do i lower my fuel pressure and what are the causes of the fuel pressure going up. i also have a walbro 255 intank fuel pump. can that be the problem?

DaX

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alpha_1 &raquo;</TD></TR><TR><TD CLASS="quote">please help me solve this problem. i have a b&M fpr but the lowest it will go is 50 psi. how do i lower my fuel pressure and what are the causes of the fuel pressure going up. i also have a walbro 255 intank fuel pump. can that be the problem?</TD></TR></TABLE>

The B&M unit is only adjustable in the sense that you can increase the pressure...using the B&M you cannot lower the fuel pressure below stock static fuel pressure. With your walbro pump pushing a higher volume, you are going to experience the increase in fuel pressure. I too was getting about 50 psi after installing my walbro and was unable to adjust it down.

You have two solutions. The first one has already been mentioned:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turboteg2nv &raquo;</TD></TR><TR><TD CLASS="quote">you need to drill out the fuel pressure regulator. check out http://theoldone.com/articles/regulator/ </TD></TR></TABLE>

Your second solution is to ditch the B&M for a regulator that can be adjusted down...like an Aeromotive, Paxton, AEM, or SX.