Best Fuel Pressure gauge?

SSGN · 01-19-2025, 04:01 PM

Looking for input on the best 1 1/2 fuel rail/Regulator fuel pressure gauge? Brand and liquid filled vs standard. I have tried a few in the past and they were never very accurate when engine bay temps got warm and also didn't last long.
Thanks in advance

1320racer · 01-19-2025, 04:08 PM

Kevin, I can't say whose is best but I can tell you that you don't want a liquid/glycerin filled gauge.

That said, my advice is to remove the gauge after the fuel pressure is set.

Jeff Niceswanger · 01-19-2025, 04:11 PM

You want the stepper motor ones. Deadly accurate. They make them in 60-210 Water Temp also. This is a AutoMeter 4463-SP 0-100 . The also have 0-15 also. I have one (0-15) laying downstairs if that's what you need.

https://www.autometer.com/2-5-8-fuel...peak-warn.html

https://www.autometer.com/2-5-8-fuel...peak-warn.html

https://www.autometer.com/media/cata.../4/4470_30.jpg

Kirk Morgan · 01-19-2025, 06:48 PM

Thats interesting. I have found the liquid filled gauges to be accurate. At the instruction of Aeromotive i pull the rubber plug out of the gauge to equalize the pressure. We just installed a Race Pack and the reading on the gauge and the data logger were the same.

1320racer · 01-19-2025, 06:58 PM

All that tells me is it’s not accurate.

SSGN · 01-19-2025, 07:40 PM

I have heard the liquid filled gauge can change as the engine compartment gets hot the fluid changes viscosity. Thanks Jeff for the input also but I am only looking for small rail mounted unit. I just want to have a look at the fuel rail periodically. I have a 2 1/2 gauge with 3 ft hose to verify if I think there is a problem.

Dyno · 01-19-2025, 08:05 PM

I had a couple of the cheap ones go bad. I bought liquid filled one from Red Horse, try that next

01-19-2025, 04:01 PM	#1
SSGN Senior Member Join Date: Feb 2006 Posts: 644 Likes: 130 Liked 140 Times in 51 Posts	Best Fuel Pressure gauge? Looking for input on the best 1 1/2 fuel rail/Regulator fuel pressure gauge? Brand and liquid filled vs standard. I have tried a few in the past and they were never very accurate when engine bay temps got warm and also didn't last long. Thanks in advance __________________ The more people I meet the more I like my dog Kevin

01-19-2025, 04:08 PM	#2
1320racer VIP Member Join Date: Nov 2007 Location: New Jersey Posts: 2,628 Likes: 160 Liked 759 Times in 379 Posts	Re: Best Fuel Pressure gauge? Kevin, I can't say whose is best but I can tell you that you don't want a liquid/glycerin filled gauge. That said, my advice is to remove the gauge after the fuel pressure is set.

01-19-2025, 04:11 PM	#3
Jeff Niceswanger Senior Member Join Date: Jul 2003 Posts: 881 Likes: 675 Liked 981 Times in 361 Posts	Re: Best Fuel Pressure gauge? You want the stepper motor ones. Deadly accurate. They make them in 60-210 Water Temp also. This is a AutoMeter 4463-SP 0-100 . The also have 0-15 also. I have one (0-15) laying downstairs if that's what you need. https://www.autometer.com/2-5-8-fuel...peak-warn.html https://www.autometer.com/2-5-8-fuel...peak-warn.html https://www.autometer.com/media/cata.../4/4470_30.jpg __________________ Jeff Niceswanger 3740 SS Last edited by Jeff Niceswanger; 01-19-2025 at 04:14 PM.

01-19-2025, 06:48 PM	#4
Kirk Morgan Member Join Date: Jan 2009 Posts: 227 Likes: 1 Liked 78 Times in 42 Posts	Re: Best Fuel Pressure gauge? Thats interesting. I have found the liquid filled gauges to be accurate. At the instruction of Aeromotive i pull the rubber plug out of the gauge to equalize the pressure. We just installed a Race Pack and the reading on the gauge and the data logger were the same.

01-19-2025, 06:58 PM	#5
1320racer VIP Member Join Date: Nov 2007 Location: New Jersey Posts: 2,628 Likes: 160 Liked 759 Times in 379 Posts	Re: Best Fuel Pressure gauge? All that tells me is it’s not accurate.

01-19-2025, 07:40 PM	#6
SSGN Senior Member Join Date: Feb 2006 Posts: 644 Likes: 130 Liked 140 Times in 51 Posts	Re: Best Fuel Pressure gauge? I have heard the liquid filled gauge can change as the engine compartment gets hot the fluid changes viscosity. Thanks Jeff for the input also but I am only looking for small rail mounted unit. I just want to have a look at the fuel rail periodically. I have a 2 1/2 gauge with 3 ft hose to verify if I think there is a problem. __________________ The more people I meet the more I like my dog Kevin

01-19-2025, 08:05 PM	#7
Dyno Senior Member Join Date: Dec 2002 Posts: 915 Likes: 1,126 Liked 680 Times in 203 Posts	Re: Best Fuel Pressure gauge? I had a couple of the cheap ones go bad. I bought liquid filled one from Red Horse, try that next