Hey guys I've a 99 Civic with a B16a2 swap. (Built by some one else). I have a AEM Fuel rail with I think AEM fuel pressure regulator. And an unknown pressure gauge. The issue I'm having now is that that gauge has since failed and is now leaking fuel profusely. I need to know what kind and what fitting it is so I can reach it and fix the fuel leak. If anyone could help that would be greatly appreciated!


My engine bay with the fuel rail and pressure gauge showing

 

The fuel pressure gauge comes with a 1/8" male NPT fitting and the '90 elbow will also have the same 1/8" male NPT fitting which goes into the fuel rail. So a 1/8" NPT plug wrapped with teflon paste will plug the leaking hole.

 

Yes almost all such gauges are 1/8 NPT, though a few might be 1/4. The gauge is a relatively fragile part. Remove the gauge and run with a plug when you're not actually tuning or troubleshooting.

 

Engine vibrations kill gauges

 

Gotcha thank you very much guys!

 

What about those gauges that mount on the fuel filter?

 

Good location. Mine is on my fpr mounted to my firewall, but not on the engine.

 

I appreciate the tips thabks!