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Communities > Diagnostics > USA Cars > Misfire 4.8 LS Engine
Misfire 4.8 LS Engine

1009 Views 1 Replies Latest reply: 2021-06-30 11:51:20


  •   Level 2   
    (22) points
    JamesGoodlad
    2021-06-12 23:49:26
    I have an intermittent misfire in a 2002 4.8 chevy.  No codes and the Autel says zero misfires on all 8.  Cylinders 7 and 8 show zeros but are red zeros??  Normally when a value is red it means it's out of range but all the other cylinders are zero black and just two are red.  anyone know what this means?
    Thanks.
    Reply

  •   Level 2   
    (45) points

    2021-06-30 11:51:20

     More info needed! How long has it been since you cleared the codes? Did you take it for a test drive with the tool connected? Do you hear it misfiring? How often?      

          etc., etc., etc.....
    Reply
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