New fuel pressure regulator running high 40 to 50 psi - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Advanced Jeep Tech > New fuel pressure regulator running high 40 to 50 psi

Gear Packages Available! Your # 1 Diff Shop is ROCKRIDGE 4ROCKRIDGE4WD Introduces a NEW Jeep Wrangler JK *led* tail Engo winches available at www.rockridge4wd.com! Free shipp

Reply
Unread 12-20-2012, 12:46 PM   #1
tequilamike
Registered User
1991 YJ Wrangler 
 
Join Date: Mar 2012
Location: san leandro, ca
Posts: 30
New fuel pressure regulator running high 40 to 50 psi

Can i expect any problems?
Will this cause anyissues
It is new and measures 40 at idle and 50 psi with the vacume line unplugged.
I am running a stroker so some extra fuel is needed.
4.5 stroker in a 91 yj. with 24# injectors. mild cam. hi flow everything, borla header, 1 range cooler spark plugs, msd high energy stock replacement coil and larger wires 7mm i think. No sensor mods.
Any help would be very appriciated.
M


Last edited by tequilamike; 12-20-2012 at 12:56 PM..
tequilamike is offline   Reply With Quote
Unread 12-26-2012, 07:59 AM   #2
hotrod351
Registered User
1955 M-38 
 
Join Date: Oct 2006
Location: arizona
Posts: 442
i thought 40 - 50 was stock fuel pressure for injected engines. what doe your jeep call for.
hotrod351 is offline   Reply With Quote
Unread 12-27-2012, 10:08 AM   #3
tequilamike
Registered User
1991 YJ Wrangler 
 
Join Date: Mar 2012
Location: san leandro, ca
Posts: 30
Thanks for the reply.
Stock is 31 to 39 psi
M
tequilamike is offline   Reply With Quote
Unread 01-03-2013, 11:08 AM   #4
foggybottombob
Registered User
1984 CJ7 
 
Join Date: May 2008
Location: Monument Colorado
Posts: 5,825
I have a 4.6 liter stroker in my XJ and your regulator is a bit high pressure. I got an adjustable regulator from Hesco for mine.
foggybottombob is offline   Reply With Quote
Unread 01-04-2013, 09:19 AM   #5
tequilamike
Registered User
1991 YJ Wrangler 
 
Join Date: Mar 2012
Location: san leandro, ca
Posts: 30
Thanks
I guess i wont worry about it.
I suspect it won't cause any problems.
The adjustable ones are expensive???
tequilamike is offline   Reply With Quote
Unread 01-04-2013, 09:37 AM   #6
JeeperDon
Patience, Grasshopper
 
JeeperDon's Avatar
1993 YJ Wrangler 
 
Join Date: Jan 2005
Location: Albuquerque, NM
Posts: 6,490
If you are looking for stock pressure, can't you just get a replacement stock regulator?
__________________
'93 YJ, '02 GM 4.3 Vortec V6, SOA, dual ARB's, 8.8+D30(w/WarnHubs), 4.88 gears, 35" BFG KM2's, AX15, 15x7 wheels, NP231+4:1+SYE+2LO, York OBA, Warn M8000, no top or doors Apr-Oct.
Member and Web guy: New Mexico 4 Wheelers My Truck Page on NM4W Site
JeeperDon is offline   Reply With Quote
Unread 01-07-2013, 04:09 PM   #7
foggybottombob
Registered User
1984 CJ7 
 
Join Date: May 2008
Location: Monument Colorado
Posts: 5,825
Stock pressure is not enough for 24 lb/hr injectors and 4.6 liter displacement. Your engine will be running rich with the setup you have now.
foggybottombob is offline   Reply With Quote
Unread 01-07-2013, 04:56 PM   #8
tequilamike
Registered User
1991 YJ Wrangler 
 
Join Date: Mar 2012
Location: san leandro, ca
Posts: 30
Running lean

I am running a stroker 4.5L so i need a little more pressure.
It was ordered as a stock regulator.
I think i need about 3 to 5 more psi than stock, and now have 5 over what i think i need.
I would think the o2 sensor would shorten the injector cycle to make 14. 7 AFR.
Also i am lean now 14.5 to 15.1 WOT
Which is another reason i am trying to get more fuel into it.
Running out of options.
Been thinking about an o2 sensor adjuster.
My nox is around 375ppm.
It was 513 before i put in a clooler plug to pass smog.
Might try a wider gap on my plug to retard timing a bit.
Might have that one backwards.
Thanks for your input.
M
tequilamike is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.