YJ Fuel System Question (Kinda Technical) - Great Lakes 4x4. The largest offroad forum in the Midwest

Go Back   Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Jeep Tech
GL4x4 Live! GL4x4 Casino

greatlakes4x4.com is the premier Great Lakes 4x4 Forum on the internet. Registered Users do not see the above ads.
Thread Tools Search this Thread
Old December 12th, 2005, 07:09 PM   #1
BigBlkYJ 355
U-Joints Fear Me
BigBlkYJ 355's Avatar
Join Date: 11-05-05
Location: Clawson
Posts: 3,361
iTrader: (4)
Mentioned: 0 Post(s)
Default YJ Fuel System Question (Kinda Technical)

Ok, let me give a little explaination of what im doing first...

For those of u who dont know, a 350 is going in the YJ. Id like to use the stock fuel pump/sending unit, which will supply MORE than enough pressure for the carbed 350.

HOWEVER, as im reading my FSM, im finding out that the fuel pump has no blow by valve/over pressure release valve. Instead they incorporated this into the fuel pressure regulator which is located on the fuel rail of the motor. When the pressure gets too high it sends it back down the return line via vac pressure supplied from the motor.....

Well this wont work obviously with a carbed motor. There is no place for a return line. Ive gotten a Holley fuel pressure regulator for bringing the pressure down to where i want it for the carb, but if for some reason the engine dosn't fire within 2 seconds (like a carbed motor ever would do that), the pressure goes well over 100psi, and boom, there goes a fitting or line.....

What i want to know is if there is some sort of inline check valve you can purchase and i can reconnect to that fuel return line. It would have to have a fuel in, fuel out, and hi pressure fuel bypass/return to tank port. Id REALLY like to keep the in tank pump, and sender. If not, then i will have to go from there....

Thanx, sorry for the long read.
BigBlkYJ 355 is offline   Reply With Quote
Sponsored Links
Old December 12th, 2005, 08:54 PM   #2
Buy a Fiat! Save the UAW!
Yetti's Avatar
Join Date: 11-05-05
Location: 20 minutes south of Hell...
Posts: 14,395
iTrader: (10)
Mentioned: 2 Post(s)

yea they make them, check out www.summitracing.com or www.jegs.com
Yetti is online now   Reply With Quote
Great Lakes 4x4. The largest offroad forum in the Midwest > 4x4 Talk > Jeep Tech

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 07:19 PM.

Powered by: vBulletin, Copyright 2000 - 2012, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Page generated in 0.10457 seconds with 27 queries