Fuel rail question

Neon4Life · Post by **Neon4Life** » Fri Jul 02, 2010 12:24 am

So on the 03 neons we got the removable cap at the end of the fuel rail.
im going to tap into the end for a fuel pressure gauge.

im been searching around and found that i have to remove the needle that in there, is that correct ? and how do i go about doing this.. do i just grab it and pull it out..?

also whats the size of the outside thread so i can go find a T-Fitting in the morning.

gtxtreme19 · Post by **gtxtreme19** » Fri Jul 02, 2010 12:51 am

If you have a valve stem remover for your wheels that will make pulling it out a lot easier. Also search around on the thread size I remember a thread asking about it but can't seem to find it now, 4an maybe? Im probably wrong

gtxtreme19 · Post by **gtxtreme19** » Fri Jul 02, 2010 1:07 am

After the search button came up short 3 times I quit and started digging til I found it for you.

viewtopic.php?t=50861

Forest Green 2k · Post by **Forest Green 2k** » Fri Jul 02, 2010 1:13 am

WARNING!!!

Danger to Fuel Rail

heydockyle · Post by **heydockyle** » Fri Jul 02, 2010 9:10 am

Before you pull the stem out, unplug your fuel pump relay and let the car run. That will keep you from getting a face full of gas.

Neon4Life · Post by **Neon4Life** » Fri Jul 02, 2010 10:59 am

^ thanks for the advice. i did jus that.

got the gauge installed and its working great. no leaks or anything.

does anyone know what the fuel pressure should read at the end of the fuel rail..?

acr · Post by **acr** » Fri Jul 02, 2010 11:00 am

why do you want a gauge for? Its only for tunning purposes...

Post by **occasional demons** » Fri Jul 02, 2010 12:06 pm

Neon4Life wrote:.
does anyone know what the fuel pressure should read at the end of the fuel rail..?

58 psi +/- 5 psi. So you have a range of 53 to 63 psi to be in spec.

Most of the time, it is dead on at 58.

Neon4Life · Post by **Neon4Life** » Fri Jul 02, 2010 1:07 pm

ok thanks. just needed to know,just to make sure.