vortec fuel psi

Post whatever here.

Moderator: TJDave

Post Reply
FJ JOHN
Posts: 12
Joined: Fri Mar 27, 2009 8:17 am
Location: Outside

vortec fuel psi

Postby FJ JOHN » Wed May 13, 2009 2:31 pm

i need to know what psi a jeep 4.0 fuel pump runs at and if it can run a vortec 5.7? HELP :?: :idea:
Top
User avatar
Grumpy
Peak Putters' Land-Use Coordinator
Peak Putters' Land-Use Coordinator
Posts: 6049
Joined: Wed Mar 14, 2007 8:38 am
Location: Kennewick, WA

Postby Grumpy » Wed May 13, 2009 7:50 pm

So, this is just a hunch, but I'd say you best keep things matched. That 5.7 may want more pressure than the 4.0 did. Lurch or whoever can confirm if my guess is right...
Dave
Have Scout, will wheel...Someday...Maybe


Quote:
Originally Posted by Oregon80
-By driving a Scout, you my friend have recycled, which is more than those pansy Prius owners can say.
-I love driving a piece of history that was nearly lost.
Top
User avatar
tobyw
Posts: 2024
Joined: Wed Mar 14, 2007 10:00 am
Location: Under the hood...

Postby tobyw » Thu May 14, 2009 7:03 am

Jeep 4.0 fuel pump runs ~45psi, and the Vortec fuel system requires ~90psi if memory serves... And I believe that if the Vortec injectors do net get adequate pressure, they won't fire at all.
Yep, I've wheeled one of those, too...
Image
Top
User avatar
Lurch
Posts: 2365
Joined: Thu Nov 08, 2007 7:10 am
Location: Pasco

Postby Lurch » Thu May 14, 2009 7:31 am

My source at chevy says it should be between 55 and 60.
You can follow me.... but it's gonna hurt ;)
Top
Post Reply

Return to “General BS Area”

Who is online

Users browsing this forum: No registered users and 1 guest