80LS1T Posted February 17, 2005 Share Posted February 17, 2005 Ok I am installing new 3/8" hardline, -6AN 37* fittings, new fuel pump(in stock location), and new cartridge style fuel filter(on the firewall). Now with the new lines I do not have a port to check fuel pressure. If I install a guage on the fuel filter(it has 2 inlet ports and 2 outlet ports, and I am only using 1 of each) will it still read the same pressure as the fuel rail? Or do I need the guage to be after the regulator? The regulator is on the return side of the fuel rail on my LT1. I guess what I am getting at is does it matter where you take a pressure reading if the regulator is up on the rail? The way I am thinking is that it wont matter.....but am I right? Thanks, Guy Quote Link to comment Share on other sites More sharing options...
wheelman Posted February 17, 2005 Share Posted February 17, 2005 You want the guage to be before the regulator in the flow. Wheelman Quote Link to comment Share on other sites More sharing options...
zxtman Posted February 17, 2005 Share Posted February 17, 2005 At the regulator is the best location to obtain a fuel pressure signal (if there is a port available); otherwise, after the filter and as close to the fpr as possible. Quote Link to comment Share on other sites More sharing options...
80LS1T Posted February 25, 2005 Author Share Posted February 25, 2005 Ok thats what I though. I also asked an "older" technican at work yesterday about this, he also said just as long as its before the regulator it will be fine. So I will be mounting a guage off the other outlet port on the fuel filter! Thanks guys! Guy Quote Link to comment Share on other sites More sharing options...
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