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Thread: 6.0 poping/hesitating. What could it be?

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  1. #1

    6.0 poping/hesitating. What could it be?

    Hey guys, Just finished a swap putting a 6.0 in a 92 jeep cherokee. the motor is an '07, has a walbro 255 pump, vette filter, computer and harness by S&P, and ls6 intake with truck injectors/fuel rail. Runs really good...for the most part. The problem is it feels underpowered and will sort of hicup and stumble at WOT. Im wondering mostly if the problem is revolving around the ls6 intake/ truck injector situation or maybe the fact that the computer was programed for the truck intake. any ideas on where to start?

  2. #2
    Join Date
    May 2006
    Location
    Waco TX
    Posts
    3,113
    If its only doing it at WOT. Could it be a fueling problem?
    DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31

    2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts


  3. #3
    Join Date
    Aug 2007
    Posts
    754
    I agree maybe has something to do with the injectors.

  4. #4
    Join Date
    Nov 2003
    Location
    Denton Texas
    Posts
    20,540
    Start with a fuel pressure gauge. Check the fuel pressure while making a WOT pull. You may not be getting sufficient fuel pressure. You should be around 58-62 PSI at WOT.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709

  5. #5
    Ok, i will report back after i do a fuel pressure check.

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