fuel pressure gauge

dr.gonzo · August 17th, 2007, 10:40 AM

I noticed that some stangs have a gauge that is tied into the fuel gauge. not the kind you have to hook up every time but one that stays under the hood all the time. Does any one know where I can find one of those? and what there called.

UPDATE: I think I found one from steeda

http://www.steeda.com/products/fuel_pressure_gauge.php

nolife · August 17th, 2007, 11:43 AM

The one you linked to even has the adapter so you do not have to remove the schrader valve. That is the type you are looking for.

dr.gonzo · August 17th, 2007, 12:27 PM

cool. I am saving up for mods but what psi should I be running for a stock engine? 35-39 psi?

nolife · August 17th, 2007, 12:49 PM

38-40 is the stock pressure, there are very few reasons that anyone should change that more then a few pounds either direction, even when modded. The advantage of having a gauge you can see while driving is for monitoring fuel pressure under load. Having one in the engine compartment or attaching a temp one is great for setting the base fuel pressure but not much more. If you are on a budget, I'd wait until you are much further with your mods before getting one in the car.

dr.gonzo · August 17th, 2007, 01:20 PM

I was going to use it for diagnostics. If I drive my car on the freeway for a while (around an hour) and if its real hot out when I come to a stop it dies on me and I have to let it cool down. I replaced the ignition module and it still did the same thing.

So I thought the gague would help me see if it was a fuel pump issuse or an ignition problem.

Do you know how much psi it should push when you turn the key but w/o starting the engine?

nolife · August 17th, 2007, 02:56 PM

It should jump up to or very close to normal after the initial key-on cycle of the pump, at least mine does. I'd wait for a second opinion from someone else on that though.

importdestroyer · March 15th, 2008, 11:17 PM

Normally, it should be 38-40 when you hit the switch even without starting the car.

izze01 · March 15th, 2008, 11:22 PM

If u have an adj fuel pressure regulator u are supposed to set it to 39.5 psi with the vacuum hose disconnected.

August 17th, 2007, 10:40 AM	#1
dr.gonzo Enthusiast Join Date: Oct 2006 Location: kc mo Posts: 670	fuel pressure gauge I noticed that some stangs have a gauge that is tied into the fuel gauge. not the kind you have to hook up every time but one that stays under the hood all the time. Does any one know where I can find one of those? and what there called. UPDATE: I think I found one from steeda http://www.steeda.com/products/fuel_pressure_gauge.php __________________ FREE LUNCH, FINAL WISDOM, TOTAL COVERAGE... WHY NOT?

August 17th, 2007, 11:43 AM	#2
nolife Hardcore Enthusiast Join Date: Dec 2006 Posts: 1,006	The one you linked to even has the adapter so you do not have to remove the schrader valve. That is the type you are looking for. __________________ 1991 GT - Original owner, all stock 1988 GT - The project car

August 17th, 2007, 12:27 PM	#3
dr.gonzo Enthusiast Join Date: Oct 2006 Location: kc mo Posts: 670	cool. I am saving up for mods but what psi should I be running for a stock engine? 35-39 psi? __________________ FREE LUNCH, FINAL WISDOM, TOTAL COVERAGE... WHY NOT?

August 17th, 2007, 12:49 PM	#4
nolife Hardcore Enthusiast Join Date: Dec 2006 Posts: 1,006	38-40 is the stock pressure, there are very few reasons that anyone should change that more then a few pounds either direction, even when modded. The advantage of having a gauge you can see while driving is for monitoring fuel pressure under load. Having one in the engine compartment or attaching a temp one is great for setting the base fuel pressure but not much more. If you are on a budget, I'd wait until you are much further with your mods before getting one in the car. __________________ 1991 GT - Original owner, all stock 1988 GT - The project car

August 17th, 2007, 01:20 PM	#5
dr.gonzo Enthusiast Join Date: Oct 2006 Location: kc mo Posts: 670	I was going to use it for diagnostics. If I drive my car on the freeway for a while (around an hour) and if its real hot out when I come to a stop it dies on me and I have to let it cool down. I replaced the ignition module and it still did the same thing. So I thought the gague would help me see if it was a fuel pump issuse or an ignition problem. Do you know how much psi it should push when you turn the key but w/o starting the engine? __________________ FREE LUNCH, FINAL WISDOM, TOTAL COVERAGE... WHY NOT?

August 17th, 2007, 02:56 PM	#6
nolife Hardcore Enthusiast Join Date: Dec 2006 Posts: 1,006	It should jump up to or very close to normal after the initial key-on cycle of the pump, at least mine does. I'd wait for a second opinion from someone else on that though. __________________ 1991 GT - Original owner, all stock 1988 GT - The project car

March 15th, 2008, 11:17 PM	#7
importdestroyer Regular 2004 Cobra Join Date: Jan 2008 Location: NC Posts: 102	Normally, it should be 38-40 when you hit the switch even without starting the car.

March 15th, 2008, 11:22 PM	#8
izze01 Regular 1994, mustang gt N/A Join Date: Dec 2006 Location: Clarksville Posts: 143	If u have an adj fuel pressure regulator u are supposed to set it to 39.5 psi with the vacuum hose disconnected.

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