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  4. What's up with the e46 plugs backing out

What's up with the e46 plugs backing out

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  • Delias95D
    Delias95D
    Delias95
    wrote on last edited by
    #1

    Just bought an e46 guy thought leaky manifold I decided to check plugs one was loose. Replaces all plugs. Sounds normal now. Just concerned it may happen again or curious on insight

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    • wasnt m3W
      wasnt m3W
      wasnt m3
      wrote on last edited by
      #2

      Sounds like they weren't properly torqued to begin with. Oddly enough, I just had a spark plug blow out on my daily driver Honda about a week ago. Previous owner had replaced the plugs about 10k miles ago. Found another that was backing out too. Glad you found it before damage was done, I wasn't so lucky. Mine took the remaining threads out of the head and destroyed a coil pack. Ended up needing to get the head helicoiled.

      m3sig-1.jpg

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      • straight6pwrS
        straight6pwrS
        straight6pwr
        wrote on last edited by
        #3

        never just trust the work someone else has done on your car. trust AND verify.

        Dan
        yajsYRL.jpg.e5f350b4dfe961d76ac8b32efce2e1a6.jpg

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        • Delias95D
          Delias95D
          Delias95
          wrote on last edited by
          #4

          wasnt m3 said:

          Sounds like they weren't properly torqued to begin with. Oddly enough, I just had a spark plug blow out on my daily driver Honda about a week ago. Previous owner had replaced the plugs about 10k miles ago. Found another that was backing out too. Glad you found it before damage was done, I wasn't so lucky. Mine took the remaining threads out of the head and destroyed a coil pack. Ended up needing to get the head helicoiled.

          Ouchhh!!!

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          • Delias95D
            Delias95D
            Delias95
            wrote on last edited by
            #5

            CR

            straight6pwr said:

            never just trust the work someone else has done on your car. trust AND verify.

            I can live by that.

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            • patsbimmer1P
              patsbimmer1P
              patsbimmer1
              wrote on last edited by
              #6

              Like above, spark plugs must ALWAYS be torqued and it's a good practice to put anti seize on the plugs when they're going in.  If they're properly torqued then you won't have this problem.

              2011 e90 M3 - DCT, Borla exhaust, BMW Performance Black Grille, ECS Painted Corners, Ziza Angel Eyes

              07 335i Stella - sport package, BMS DCI, zhp knob, TMS cf parking brake lever, VRSF downpipes, MHD tune, H&R race springs, other stuff *SOLD*

              97 328i Lola - sport package, m50 intake manifold, m50 manifold.com install kit, custom CAI, K&N filter, Borla exhaust, FK silverline coilovers, 25.5mm front sway bar, Powerflex front sway bushings, Turner Radiator, fan delete *sold*
              95 325is *sold*
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              AKA- HALLWAY PAT

              "burnouts bring babes and babes dont have time for bushings" - Kaiser Rolls

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