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P0304 misfire on cyl 4

Discussion in 'Cherokee' started by Jeeep99, Jun 25, 2017.

  1. Jun 25, 2017 at 6:12 AM
    #1
    Jeeep99

    Jeeep99 [OP] New Member

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    99 grand cherokee 4.0
    1999 grand cherokee larado misfire on cyl 4 ,after 180 miles slight coolant loss
     
  2. Jun 25, 2017 at 8:01 AM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    Welcome! Check the spark plug wires.
     
    JKBob 25 likes this.
  3. Jun 25, 2017 at 8:36 AM
    #3
    aggrex

    aggrex Well-Known Member

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    Tuffy>AEV>TTO>JW>STech>EVOcage>MagnaFlow>SpiderTrax>RockHard>TF>SpringTail>67design>Bolt>GPCA>Curt>
    Welcome! Fouled plug? Spark plug gap? Bad wire arcing another wire or object? Time for new set of wires or plugs?
     
    JKBob 25 likes this.
  4. Jun 25, 2017 at 8:37 AM
    #4
    Jeeep99

    Jeeep99 [OP] New Member

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    Ok thanks
     
  5. Jun 26, 2017 at 9:14 AM
    #5
    OFFGRID

    OFFGRID Well-Known Member

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    Peter
    Houston
    Vehicle:
    1979 Jeep CJ7, 258, TH350, NP208
    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
    Everything he said and maybe bad injector.
     
    aggrex and JKBob 25 like this.
  6. Jun 27, 2017 at 9:25 AM
    #6
    Jeeep99

    Jeeep99 [OP] New Member

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    99 grand cherokee 4.0
    Thanks everyone, problem solved, bad fuel injecter
     
    chris4x4 likes this.
  7. Jun 27, 2017 at 9:26 AM
    #7
    aggrex

    aggrex Well-Known Member

    Joined:
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    DE
    Vehicle:
    Backcountry '16
    Tuffy>AEV>TTO>JW>STech>EVOcage>MagnaFlow>SpiderTrax>RockHard>TF>SpringTail>67design>Bolt>GPCA>Curt>
    Ding ding winner
     
    chris4x4 likes this.
  8. Jun 27, 2017 at 8:58 PM
    #8
    OFFGRID

    OFFGRID Well-Known Member

    Joined:
    Oct 3, 2016
    Member:
    #317
    Messages:
    2,018
    Gender:
    Male
    First Name:
    Peter
    Houston
    Vehicle:
    1979 Jeep CJ7, 258, TH350, NP208
    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
    Thanks for letting us know. Nothing worse than being left hanging.
     
    chris4x4 likes this.
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