HOW TO: Install a fuel pressure gauge

Serban · 10-26-2004, 09:49 AM

This writeup will show you how to install an Autometer 2 1/16" fuel pressure gauge in your engine bay.

Materials Used:

Autometer Fuel Pressure gauge
Part # 3312

Autometer Gauge Mount bracket
Part # 2236

XRP 1' braided hose with 90° end
Part # 649012

2 XRP Hose Ends
Part # 230004

XRP Threaded 'T' Fitting
Part # 982404

2 hose clamps
(can be bought at any parts store)

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Below are some pictures of the parts, and installation instructions:

These are all the parts needed.

Step 1:
Find a place to mount the bracket where you will have enough for the braided line to reach. For this, I used the driver side strut tower, and used one of the existing holes to screw down the bracket.

Step 2:
Put all the fittings together. The 2 hose ends go on the ends of the 'T' fitting, and the line will go on the bottom.

Step 3:
Find the proper fuel line to splice into. This will be the line coming off the fuel filter, going to the feed on the rail (also seen in the picture above). Once you find this line, cut it in a spot where you can put each piece of hose on the XRP fittings.

Step 4:
Connect the 90° end of the line to the gauge and mount the gauge in the bracket (make sure you run the line through the bottom of the bracket, so the gauge can drop right in after the line is tightened).

Step 5:
Turn the ignition on, and check for leaks, if you see a leak, tighten the fittings better.

Step 6: Optional
If you want to go that extra mile, and have a lighted gauge, connect the light bulb. Just ground (black wire) it somewhere near where its mounted, you should have other bolt holes, or grounds in that area. For power (white wire), you will need to extend the wire to reach the driver side sidemarker. This will make the gauge come on when you turn your parking lights on. Splice the white wire into the positive sidemarker wire, and you're done.

There are other alternatives to this, but this is just one that I have done.

SR20RACER · 03-27-2005, 10:33 PM

Cant you just get this:

Cut the stock hose insert this fitting and screw the gauge right into it?

Serban · 03-28-2005, 01:25 PM

Yes, you can do that as well, but this writeup was on how to install a 2 1/16" autometer gauge. Its more pricey, but on my motor the small fitting and gauge would be under the intake arm, and I didn't want to search for the gauge to see the fuel pressure.

BTW, I will look for those pics tonight, I know I've been putting it off for a while.

Fonque · 06-20-2005, 10:17 AM

can you suggest a place to mount this if you have the stock airbox on an NX?

Serban · 06-21-2005, 12:19 AM

You can get a longer line, and mount it on the firewall or somewhere else. You'd have to see where you have room to put it.

TOOQIKK · 06-21-2005, 01:26 PM

why not run a longer line and mount it inside the cockpit?

se-r pastor · 06-21-2005, 01:31 PM

Quote:

Originally Posted by TOOQIKK

why not run a longer line and mount it inside the cockpit?

I wouldn't want a gas line running in my cockpit!

SeRboostSr20 · 06-27-2005, 02:00 PM

they make an isolator. where only antifreeze runs into the car

prettywhitese-r · 12-25-2006, 06:38 PM

went on egauges.com is the part #4312, thanks

redb13se-r · 03-23-2007, 09:23 AM

before you cut any fuel lines, make sure to pull the fuel pump relay and turn your car over to make sure you dont have pressure in there. it could get.... messy, if you dont.

whiplash willy · 04-05-2007, 05:25 PM

I did the same setup after reading this thread...I really like it.

b13-T · 08-09-2007, 05:32 PM

can somebody provide me with a link to where i can order the fittings and hose?

Serban · 08-10-2007, 05:33 PM

Right Here.

This is just for the line kit, you will still need to pick out a gauge if you don't already have one.

SentraDude · 11-30-2008, 10:35 PM

Since this is the only writeup, has anyone used anything else (other fittings) to make the install less expensive?
PS>
This is a great writeup, im just looking to spend less.

10psigti · 11-30-2008, 11:21 PM

just go to hardware store get a copper or any metal t and fitting with a barbed end to go into the gauge and some fuel hose from any parts store I used the Goodyear hose with a blue isolating layer in all cost less than 10$ not including the gauge

duesmandella · 03-07-2009, 03:23 PM

Quote:

Originally Posted by 10psigti

just go to hardware store get a copper or any metal t and fitting with a barbed end to go into the gauge and some fuel hose from any parts store I used the Goodyear hose with a blue isolating layer in all cost less than 10$ not including the gauge

I did the same thing man, cost me less than $10.
Another note guys, you dont have to unplug the fuel pump relay, just take the gas cap off and that'll release the pressure, you'll still have a lil gas drip out
This is a great mod that makes you feel better knowing more about your car and takes literally five minutes

CovertRussian · 05-05-2009, 11:12 AM

Quote:

Originally Posted by TOOQIKK

why not run a longer line and mount it inside the cockpit?

I know this a very old comment, but there are two reasons why you don't want to run it into your cockpit.

1. Fuel going your cockpit and can spill or if the line gets cut on the wirewall hole, etc. etc.

2. When your adjusting your FPR, you want to see what your fuel pressure is. If your gauge is going to be in the cockpit then you will be running around a lot more then you should...

topdog781 · 05-19-2009, 10:10 AM

If your going to do this install I recommend that you use a auto meter liquid filled fuel pressure gauge If your going to mount the gauge in the engine bay. The vibrations from the engine will damage the gauge. Ask me how I know, I have been through 2 of those gauges listed. So save your self time and do it right the first time.