return line problems - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 02-28-2009, 02:16 PM   #1
Join Date: Feb 2009
Posts: 1
return line problems

i am having some problems building pressure up in the return line from the carburator to the fuel tank. sometimes my jeep runs great and sometimes it just feels like its not getting fuel. the fuel pump is new. if i clamp the return line off it runs good all of the time. any suggestions?

peten is offline   Quote
Old 02-28-2009, 05:50 PM   #2
YjMopower's Avatar
Join Date: Oct 2008
Location: Bronx
Posts: 414
Send a message via AIM to YjMopower
maybe if you put some fuel line cleaner,it could proably clean up deposits in your line,that are holding the fuel back ,so when you put pressure the fuel can actually go thru the deposits with force.also check your fuel filter.

YjMopower is offline   Quote
Old 02-28-2009, 08:41 PM   #3
Felsengleiskette's Avatar
Join Date: Sep 2005
Location: Detroit,Michigan
Posts: 600
why dont you just block it off if its running good blocked? as in dont run a return...what pressure is your pump? or reduce the diameter of the return line to help build pressure. for carb you want around 5-7 lbs. of pressure. put a pressure gauge on your fuel line and see what your running.
mine: 95' YJ-4"lift (Skyjacker) 2" body lift. chevy 350/th400/np241 swap. herculined interior, boat drain plugs for floor. TJ hood. 33" MTR. Up next: bigger axles.
Felsengleiskette is offline   Quote
Old 03-01-2009, 05:26 AM   #4
87YJWrangler's Avatar
Join Date: Sep 2008
Location: Owatonna, Minnesota
Posts: 640
Mine runs like its getting to much fuel I gotta replace fuel filters but Im outta work so I gotta wait just like my clutch
Mine: 1987 YJ 4.2 5spd soft top
98% of people when they are about to go into the ditch say "oh shit!" The other 2% are Minnesotans and when we are about to go into a ditch we say "Hold my beer and watch this shit!"
87YJWrangler is offline   Quote

Thread Tools

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
how to fix all vacume problems and how to locate the problems. Captaincoop1220 YJ Tech Forum 50 02-23-2013 01:19 PM
Another brake line question. kvc123 YJ Tech Forum 4 02-17-2009 06:56 PM
rear brake line gvillalobos YJ Tech Forum 3 02-06-2009 03:50 PM
heres a new 4wd vac line diagram and help please ? 1987 wrangler YJ Tech Forum 1 09-24-2007 11:57 PM

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 10:47 PM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC