Fuel Lab PSI?

Nic · Jul 1, 2014

came preset to 18. Is this ok? From what I got, the stock lift pump only supplies like 3-5 psi on the 6.4?

jdgleason · Jul 1, 2014

You'll wanna be around 10.

Nic · Jul 1, 2014

Ok. I suppose Ill have to run a gauge somewhere to get an accurate measurement. I have the aluminum fuel cap with a tap on top. Could I do this there?

jdgleason · Jul 1, 2014

You can plug a gauge into the schrader valve on top of the fuel cooler

Radioflyer · Jul 1, 2014

jdgleason said:
You can plug a gauge into the schrader valve on top of the fuel cooler

x2. Beat me to it JD. LOL

jdgleason · Jul 1, 2014

Cody @ ATP Trucks said:
x2. Beat me to it JD. LOL

Great minds...

Stroked777 · Jul 1, 2014

8-10 psi is what I hear. Any higher and you push a seal out if the hpfp

Nic · Jul 1, 2014

Stroked777 said:
8-10 psi is what I hear. Any higher and you push a seal out if the hpfp

:jawdrop: Yep ..Turning it down now. Thats all I need to know. Would going slightly less than 8 be ok or does it have to be at 8-10? I appreciate the help.

Nic · Jul 1, 2014

jdgleason said:
You can plug a gauge into the schrader valve on top of the fuel cooler

Thanks JD

Stroked777 · Jul 1, 2014

Just read through this thread quick
http://powerstrokearmy.com/forums/showthread.php?t=45198&page=6

Nic · Jul 1, 2014

Stroked777 said:
Just read through this thread quick
http://powerstrokearmy.com/forums/showthread.php?t=45198&page=6

Wow. I certainly do not want those issues. It's only had about 25 miles on it since the install. Hope that didn't hurt anything yet.

Fast-6.0 · Jul 1, 2014

Stroked777 said:
8-10 psi is what I hear. Any higher and you push a seal out if the hpfp

I have run 20psi on my own truck without any issues. Lot's of trucks running 15psi without issue.

Stroked777 · Jul 2, 2014

Fast-6.0 said:
I have run 20psi on my own truck without any issues. Lot's of trucks running 15psi without issue.

I believe people were saying the issue is more on the newer remans

Nic · Jul 2, 2014

I'm still sitting on pins and needles with this truck. I dont want to take any chances. Still getting used to the 6.4. I'm less afraid of the 6.0 at this point but then again that's where I came from and what I was comfortable with. I really really like this truck and amazed with it over my 6.0 and just want to make sure everything is exactly right. Needless to say, the truck hasn't moved an inch and has been on lock down since I got this information LOL I'll set it at 10.

B585Ford · Jul 2, 2014

In another thread, Tadd said he ran one at 20. Obviously that is not optimal but I am sure you didn't hurt anything...especially if that is original HPFP.

CAT35niner · Jul 3, 2014

I've been running 18psi with my fass for almost a year with no issues. But I know it's not the best thing for my truck so I will be setting my new fuel lab at 12psi. Like the op I don't want issues especially with blowing seals out. But it survived at 18 with no issues for a long til the fass took a dump.

Nic · Jul 3, 2014

Ok, I tried to adjust it..backed the set screw out and nothing. It won't drop below 20psi. When I screw it in it went up to 24. Any ideas???

CAT35niner · Jul 3, 2014

Where are you reading your pressure at?

Nic · Jul 3, 2014

The valve stem under the hood.

CAT35niner · Jul 6, 2014

You need to get the actual fuel pressure coming out of the fuel lab. I don't think where you are reading is actual. My dashdaq reads twenty pounds and my pressure is 15. I just installed my fuel lab today. I backed the regulator out a half turn and my pressure went from 18 to 15. Now the gauge I'm using isn't the most accurate right now. It's 0-120 non liquid filled. So I'm assuming. But the needle did drop when I backed it out. I will be getting a new gauge this week so I will be able to confirm my adjustment.