1. Welcome to Jeeps.net!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Jeep discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Jeep owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Runs very rough

Discussion in 'Wrangler YJ (1986-1995)' started by BKM, Mar 25, 2019.

  1. Mar 25, 2019 at 10:07 AM
    #1
    BKM

    BKM [OP] New Member

    Joined:
    Mar 25, 2019
    Member:
    #3011
    Messages:
    1
    Gender:
    Male
    First Name:
    Brian
    Vehicle:
    1989 wrangler
    Stock
    Hello. Wondering if anyone can help. I recently purchased a 1989 wrangler with a 4.2L engine. The jeep was sitting for 5 years. I got it home and flushed the fuel lines and added fresh fuel. Replaced all filters and did a complete tune up. Jeep ran perfect for 2 days. Day 3 it had problems starting. When it started it ran very rough and would not rev up. I did pull the muffler as it was bad. Any suggestions on what to check or look for would be appreciated.
     
  2. Mar 25, 2019 at 11:40 AM
    #2
    Prerunner1982

    Prerunner1982 Well-Known Member

    Joined:
    Aug 4, 2017
    Member:
    #1745
    Messages:
    921
    Gender:
    Male
    First Name:
    Jon
    Vehicle:
    93 XJ 2 door, 97 XJ 4 door, 00 XJ 4 door
    Did you happen to drop the tank and take a gander at the inside of the tank? Could be crap in there that found it's way to the fuel pump and is clogging up most of the pump.

    Also Brian, welcome from Oklahoma.
     
  3. Mar 25, 2019 at 12:00 PM
    #3
    TJ_abuser

    TJ_abuser Well-Known Member

    Joined:
    Sep 18, 2018
    Member:
    #2590
    Messages:
    990
    First Name:
    Todd
    Vehicle:
    2005 jeep unlimited
    2 inch lift, bumper and winch 33" mud claw
    Was going to say what the okey beat me too. Oh yeah and welcome from Texas
     
  4. Mar 25, 2019 at 12:01 PM
    #4
    aggrex

    aggrex Well-Known Member

    Joined:
    Sep 12, 2016
    Member:
    #203
    Messages:
    2,808
    DE
    Vehicle:
    Backcountry '16
    Tuffy>AEV>TTO>JW>STech>EVOcage>MagnaFlow>SpiderTrax>RockHard>TF>SpringTail>67design>Bolt>GPCA>Curt>
    Welcome @BKM . After sitting for 5 years rubber hoses, seals or gaskets may have deteriorated and any residual fuel in the tank should have been removed. Great that you got it running so that's a positive sign. As mentioned already suspect gummed up fuel pump, filter and/or carb if applicable.
     
To Top