I noticed that my after relocating my regulator to the firewall, My fuel pressure doesn't drop after shutting the car off. Now I know it wouldn't drop right away but after 24hours it stays in the same spot as if the car was running. Before when I had it directly off the rail it would drop back to zero after a while.. How normal is that?

It is fine. Mine holds pressure as well, even after car is off. Granite, not as much as started, but it still tends to hold pressure. I cant explain why it does it though.

TSITurbo95 said:

It is fine. Mine holds pressure as well, even after car is off. Granite, not as much as started, but it still tends to hold pressure. I cant explain why it does it though.

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Yeah I think my gauge crapped out. After I got gas I drove home, popped the hood and noticed my gauge was pegged past 100 psi. So in a nervous panic I pulled the vacuum line and turned out the set screw and the gauge stayed in the same spot. I then waited about and hour or so to crack the line on the fuel rail and it barely had pressure in the line. Next step is a liquid filled gauge I hope this works.

I like liquid filled! Shock Resistant!

hereitcomes said:

I like liquid filled! Shock Resistant!

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Aeromotive doesn't like them though. They recommend against them because they are too temperature sensitive and become inaccurate.

hhuricane said:

Aeromotive doesn't like them though. They recommend against them because they are too temperature sensitive and become inaccurate.

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I already swapped in a liquid filled gauge and not only is it reading properly as far as I can see it bleeds back down to zero after the cars been sitting. I have regulator on the firewall and all it took was less than 2 weeks for the old autometer gauge to eat shit on me. IDK why but it happened. I was always told by a few wise heads that liquid filled gauges are more accurate and reliable vs a standard gauge. If they use liquid filled gauges on industrial equipment and stuff of that nature heat shouldn't be an issue in my eye.