[gorskined]

[QUOTE=Alan L;12151813]Your 2 044 pumps will be doing the same as everyone else's 044 pumps - and presumably they would have 155lb entering the FD also. Not sure how you are measuring this but I am guessing you are completely blocking the exit for the fuel with a gauge on the line to the FD. That doesn't really matter. The FD pressure is controlled by the bleed off at the system pressure valve. And yours is in spec. Which means the FD is capable of bleeding off the extra fuel. So everything should work just fine as far as that side of things go. You could only have too much pressure if the system pressure valve was unable to regulate the SP.
Regards
Alan[/QUOTE

Alan
Thanks for the reply This is why I'm frustrated. The intermittent 155 psi is not with an obstructed return line. The 150 psi is just before the the FD . i originally replaced all my fuel lines with an6 lines. I can installed a an6 gauge fitting pretty much any where, so i placed one just before the hard line entering the fd. where i made a custom fitting to connect the an6 to the Porsche hard line .
When i use my test gauge manifold the pressure is good and my control hot and cold are good the system pressure is about 85psi I've seen it as high as 95 (good) and the line entering the FD is 150 psi when the problem is happening..... i even swapped gauges to rule out a gauge issue. .
After i removed the Fd and connected the supply line to the return and pumped directly back into the tank. The gauge barley moved but its a 200psi gauge. when i slowly bend the the return line the gauge will start to rise and pins at 200psi hard, like it has quite a bit more pressure than 200psi . When i do the same test with a single pump it will run up to 145 -150psi .. I'm convinced something is off with the fd.
i just boxed everything up and sent it out to flowthech. after about 50 hours of testing and checking I'm at the point were I'm pretty convinced its not anything I'm doing wrong . i even drained the new tank put in bore scope to make sure there were no issues with the return line in the tank. Then i removed all my an6 fittings to be sure when i inserted the line into the fittings i did it correctly (no ripped or folded internal liner flapping around ) all good . ill let you know what flowtech says

Thanks again always appreciate your knowledge

Regards Ned

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