Hey guys,

So I'm trying to trouble shoot a fuel pressure/delivery problem.

Can you get an accurate reading for the 42.5psi of fuel pressure you should have by putting a T in the hose portion of the return line off the regulator?

I don't seem to be holding pressure and haven't been able to figure it out. I want to see if I'm holding the 42.5psi and if its dropping immediately or not.

 

I have a T on the fuel line just before it enters the fuel rail. I use it for my defi fuel pressure guage as i had some leaning out problems before...

 

Tap it before the fuel line, not after.