91hatchgt

I am mounting a liquid filled gauge to my fuel rail, but I can't seem to get the check valve off of the rail. Does anyone know what size it is? I have tried both standard and metric sizes and have yet to find the right size. Thanks.

cobrakiller306

are u talking about the schraeder valve?

Novipowered5.0

The gauge I have screws right onwithout removing the valve.

biggmac

What gauge is this?

jtmustang

i have a liguid filled guage screwed right into the 1/8 npt port on my aeromotive regulator?

where are u trying to put it?

nmerrill

Yeah im pretty sure the gauge threads on with the schraeder valve still on

nitrous_bob

no it has to come off

the schrader valve is in 2 parts, the inner which has the bicycle style check valve and the outer which is actually part of the rail

you need to back up on the rail part w/ one wrench and then remove the inner portion w/ another

i really can't remember for sure, they are standard and something 16's

i wanna say 5/16 on each one

91hatchgt

I got it. It was 11/32".. Maybe it is slightly different on the SN95 fuel rails, since we have different fuel rails.

BTW: With the gauge I have, you must completely remove the schrader valve from the rail, then insert the adapter, and then the gauge screws into the adapter.