Replace plug with repaired threads?

Discussion in '2nd Gen - 2003 - 2006' started by Bolt snapper, Mar 14, 2019.

  1. Bolt snapper

    Bolt snapper Full Access Members

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    So my buddy's truck blew a plug several years back and a local shop did the insert repair. He's long overdue for a tune up and is having some issues that I think are related to bad coils, coil boots, plugs.

    Should we skip changing the plug on the repaired cylinder? Will trying to remove the plug remove the insert and cause a bigger problem?
     
  2. The6ofus

    The6ofus Active Member

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    I had a 99 F-150 5.4 do the same thing around 75000 miles. I repaired it myself with the Time Sert kit. When I changed plugs around 150k I had zero issues with that cylinder/spark plug, removing or reinstalling.
     
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  3. Hamfisted

    Hamfisted Full Access Members

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    If it was properly repaired with a Timesert you should have no issues with plug changes.
     
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  4. Trainmaster

    Trainmaster Old School Member

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    I replaced mine that were repaired with a Timesert also with no problems. You really don't have to much of a choice... that plug has to be changed - eventually. Even if it wasn't done properly and some poorly installed Heli-coil comes out on the plug, it shouldn't damage anything.
     
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  5. 1955moose

    1955moose Full Access Members

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    They pretty much said it all. You don't want to run around with 7 new plugs, and one old worn out one.

    Sent from my N9131 using Tapatalk
     
  6. Esat

    Esat Active Member

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    Use some of that penetrating oil, it helps to soften the dirt, oxidation ect.

    Sent from my SM-N960U1 using Tapatalk
     
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