I figured I'd pose this question here before I drive around town looking for adapters. I can't find the answer anywhere.

Im going to test static/dynamic fuel pressure before doing the blue spring upgrade on my 2004 F250 6.0

What I have:

Actron 7838 Fuel Pressure tester
Diesel Manor Billet fuel filter cap with 1/8 NPT for pressure testing.

I cant seem to find the correct adapter to connect from the 1/8 NPT on the fuel filter cap to my actron gauge. Im pretty sure I need a male 1/8 NPT for fuel filter cap to (something?? Whatever the gauge hose connection accepts). I guess the issue is that I can't figure out the thread pitch and size for the male end that needs to go into the hose on the gauge. Whatever it is, its not 1/8 NPT like I thought. It may be close to 1/8, but the pitch is different.

Anyone have a similar setup? The Gauge manual is worthless.

Thanks!

 

On the Ford fuel pressure regulator there is a guage/test port. I believe the tester you have has a adaptor designed to fit into that. So I not sure why you are using the billett fuel filter cap....

 

m12x1.5