» » »

Mitsubishi Q&A

Ask Your Question

1997 Mitsubishi Eclipse Question: #4 spark plug fouls often, any suggestions why?

 

Question

my97eclipsegs, 2.0L 4 Cylinder, Virginia, IL, December 21, 2013, 12:21
 Rookie

have had prior wiring harness issues but has been fixed, 167k on motor, many new parts, rotors,callipers,battery,clutch kit,plugs,wires,fuel injectors,lower ball joints,ect its is a project for my son and me, eventually turboed as well

1 Answer
Flag This
  • Answer #1

    G. T. Service Center (3112 Answers) , Stephenville, TX - (254) 638-3236
    ProfessorG December 21, 2013, 12:32
    Profile_thumbnail
     Master

    Just a suggestion; Bad valve guides, seals, collapsed piston rings, PCV valve. Turbo could have helped cause ring problems on high mileage engine.

    Flag This
  • Reply

    my97eclipsegs, December 21, 2013, 13:06
     Rookie

    pull a missfire on cyl 4 on diagnostic, has happened before,when replace is fine for about a yr, motor seems to be mechanically sound, thanks for your input though, greatly appreciated

    Flag This
  • Reply

    pushrod, December 21, 2013, 15:37
    Profile_thumbnail
     Master

    Should be able to live with a once a year spark plug change!

    Reply
    Flag This