So after installing my new lift pump and fuel filter i was wondering about my needle valve on my fuel pressure gage line its unscrewed about a 1/4 turn could the valve be on too tight and cause a difference of fuel psi? I have great fuel pressure now but i was wondering if i should adjust my needle valve to the new lift pump.

 

- shouldn't need to worry about it TOO much, I closed mine down, and backed it out about .125 turns - as long as you're reading fuel pressure and have no hint of pulsing in the gauge, you should be okay

 

ya theres a tiny tiny tiny bit of pulsing in it now that i messed with it so I am goin have to go over to my folks since there the closet to me with out driving 40miles and have my dad turn it down tell it stops see what i get for messing with things LOL

 

After you have the valve adjusted where you want it tighten down the packing nut under the valve handle. This will help keep the adjustment from changing.

 

Just did it 14psi at idle just cruising down the road I am at 12psi wot I am about 10psi and the only time it dips lower than 10 is when I am in it before i shift.

 

It's almost impossible to shut it down too far. Mine is so closed off it just barely burps when key is turned on and takes 3-4 sec to get to full psi reading after startup. I actually have to open it a 'tad' when cooler weather comes.
This setting has allowed a bouncing, rattling, dying gauge from 3 yrs ago to survive...so far.
Less is definately more (better). If it will fall to zero after shutdown...it's not shut down too far!

RJ

 

Where is the best place to purchase a needle valve? I have been running my FP gauge without one because I cant fint the right size.

 

I got mine through Graingers. If can't do that, I have heard on here NAPA has them. Use adaptors if needed.

RJ

 

If you can't find it locally, Vulcan has the correct one:
http://www.vulcanperformance.com/ser...h-8-NPT/Detail

 

Thats right about were I have mine at now when I started it and it seen 0psi for a few moment i was about to cry then it flew up to 14psi then i was able to breath