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    Thread: What happens when you gap sparks wrong?

    1. Member Gberg888GLI's Avatar
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      10-17-2007 03:22 PM #1
      What happens when you gap spark plugs wrong?

      I think i messed up one or two of the gaps and i was wondering if there are certian symptoms i should look for... my car is sputter a little and my exhaust got louder and i smell a smooty smell...?


    2. 10-17-2007 03:35 PM #2
      Quote, originally posted by Gberg888GLI »
      What happens when you gap spark plugs wrong?

      I think i messed up one or two of the gaps and i was wondering if there are certian symptoms i should look for... my car is sputter a little and my exhaust got louder and i smell a smooty smell...?


      sounds about what would happen when u mess the gaps up..... y would you knowingly mess them up and not just fix them b4 u put them in?

    3. Member 01gtiaww's Avatar
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      10-17-2007 03:46 PM #3
      A gapper costs like $1.00 at NAPA. Why would you put plugs that are not gapped correctly in your car?

    4. 10-17-2007 03:46 PM #4
      Quote, originally posted by UntouchableGTI »
      y would you knowingly mess them up and not just fix them b4 u put them in?

      wouldn't be any fun then now would it???


    5. Member Gberg888GLI's Avatar
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      10-17-2007 06:20 PM #5
      well i gapped em all to .28 or whatever the setting is but i think i may have messed some of em up because i used a 1906 gapper... it was really crappy and that may be the problem.

      Will it cause my exhaust to get louder?


    6. Member loxxrider's Avatar
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      10-17-2007 08:27 PM #6
      Quote, originally posted by Gberg888GLI »
      well i gapped em all to .28 or whatever the setting is but i think i may have messed some of em up because i used a 1906 gapper... it was really crappy and that may be the problem.

      Will it cause my exhaust to get louder?

      I guess it could...considering it wouldn't be firing the same as normal. Just fix it and find out


    7. 10-17-2007 08:29 PM #7
      Go to your local auto parts store...gappers are $.99.

      Just take the plugs out...and re gap them to what they should be.

      What's the big deal?


    8. Member 02GTIFREESKIER's Avatar
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      10-17-2007 08:34 PM #8
      Gappers are gay. Spend the extra three dollars and get a feeler gauge set.
      Corrado: because I always wanted to get heckled by elitist pricks over the internet.

    9. Member Gberg888GLI's Avatar
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      10-17-2007 11:23 PM #9
      What do your gappers look like... mines just a bunch of metal sheets that spin/flip out then u hit the spark until its hard to pull that thing out.

    10. Member Cool Me's Avatar
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      10-17-2007 11:26 PM #10
      your car will missfire when you gap plugs incorrectly.

    11. Member loxxrider's Avatar
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      10-18-2007 12:12 AM #11
      Quote, originally posted by Gberg888GLI »
      What do your gappers look like... mines just a bunch of metal sheets that spin/flip out then u hit the spark until its hard to pull that thing out.

      You have a feeler gauge...which is a gapper.

      There is another kind of gapper that looks like a silver dollar or something. It has a bunch of marks around it and the side goes from thin to thick. Thats a dumb description, but it gets the point across.


      Modified by loxxrider at 12:13 AM 10-18-2007


    12. Member 02GTIFREESKIER's Avatar
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      10-18-2007 01:53 AM #12
      Actually i think that description is spot on. I dont trust the "silver dollar" kind though. Its impossible to an accurate gap with them.
      Corrado: because I always wanted to get heckled by elitist pricks over the internet.

    13. Member Issam Abed's Avatar
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      10-18-2007 05:00 AM #13
      Quote, originally posted by diggb5 »
      your car will missfire when you gap plugs incorrectly.

      Really?

    14. Member SnowGTI2003's Avatar
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      10-18-2007 08:23 AM #14
      Quote, originally posted by Wizard-of-OD »
      Really?

      The Vortex told me so it must be true!!

      OP

      -Too large of a spark gap will cause the spark plug to misfire at high boost levels.

      -Too small a spark gap might cause slightly worse fuel economy and slighter harder cold starts. You have to gap pretty damn small to start to see either of those issues though.


    15. Member 1pt8t's Avatar
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      11-19-2007 06:32 PM #15
      Aren't most of these pre-gapped? I didn't think you were supposed to gap platinum and iridium b/c of potential damage?
      Need VAG-COM / VCDS near So-Cal / Redondo Beach? Hit me up!
      Also have boost leak tester with PRV for 2.75-3" TIP!

    16. 11-19-2007 06:39 PM #16
      Quote, originally posted by 1pt8t »
      Aren't most of these pre-gapped? I didn't think you were supposed to gap platinum and iridium b/c of potential damage?

      I regap my irridiums.


    17. 11-19-2007 06:40 PM #17
      Quote, originally posted by 1pt8t »
      Aren't most of these pre-gapped? I didn't think you were supposed to gap platinum and iridium b/c of potential damage?

      they kind of are but they have been in a box and moved and shuffled around. They wont always be correct, so you check and fix them accordingly.


    18. Member 1pt8t's Avatar
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      11-19-2007 07:45 PM #18
      i always check them, but their packed in a cardboard tube around the tip. always fine... i've just heard it can damage the electrode.
      Need VAG-COM / VCDS near So-Cal / Redondo Beach? Hit me up!
      Also have boost leak tester with PRV for 2.75-3" TIP!

    19. Banned sickvdub's Avatar
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      11-19-2007 07:59 PM #19
      Quote, originally posted by SnowGTI2003 »

      The Vortex told me so it must be true!!

      OP

      -Too large of a spark gap will cause the spark plug to misfire at high boost levels.

      -Too small a spark gap might cause slightly worse fuel economy and slighter harder cold starts. You have to gap pretty damn small to start to see either of those issues though.

      I can testify to this mine were way more open than they should and lets just say i was hating my car. On a more serious note what would cause the gap to open as the time goes by? and would it open it all the way to .50 from .28?


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