Page 3 of 4 FirstFirst 1234 LastLast
Results 21 to 30 of 39

Thread: Occasional blips and farts since installing NGK plugs

  1. #21
    Senior Member BuellyBagger's Avatar
    Join Date
    Apr 2010
    Location
    Nebraska City, NE
    Posts
    3,674
    Quote Originally Posted by Cooter View Post
    I'm waiting to pat myself on the back for a good guess. Tuned in, Good luck Buelly!
    So you thinking I should go back up in heat? Either way might be a while before I get anything done. Winter is on its way back and there's no heat in the shed so buelly no wrenchy....

  2. #22
    Senior Member BuellyBagger's Avatar
    Join Date
    Apr 2010
    Location
    Nebraska City, NE
    Posts
    3,674

    Quick update... replaced plugs. Old ones were gapped to about .30. gapped new ones. .35, ohmed the wires ( a ok). Haven't ridden yet. Fingers crossed. Rear plug is the bottom one...

  3. #23
    Senior Member Simplymichaeljr's Avatar
    Join Date
    Jul 2016
    Location
    Tacoma, wa
    Posts
    318
    I am running denso iridium's.....no issues. FWIW even though you found out the hard way. I also check the gap despite them being pregapped just to make sure.

  4. #24
    Inactive
    Join Date
    Feb 2011
    Location
    AmishLand, PA.
    Posts
    7,526
    Quote Originally Posted by Simplymichaeljr View Post
    I am running denso iridium's.....no issues. FWIW even though you found out the hard way. I also check the gap despite them being pregapped just to make sure.
    IRIDIUM AIR-GAPS: have mentioned this on here a dozen or more times now. do NOT use a metal feeler gauge to change the air-gap on any iridium plug. why? get a magnifying glass....look at the inner surface of the ground electrode....and you'll see why. if you insist on gapping these plugs use something like a match-book cover folded over atop itself until its thickness approximates the gap you're seeking.

  5. #25
    Banned
    Join Date
    May 2014
    Location
    Seattle
    Posts
    1,636
    I adjusted gap on my iridium plugs bending it with plug bending tool and checking gap with caliper. Just do it carefully, do not touch the tip.

  6. #26
    Senior Member
    Join Date
    Jan 2016
    Posts
    828
    👍

  7. #27
    Senior Member Simplymichaeljr's Avatar
    Join Date
    Jul 2016
    Location
    Tacoma, wa
    Posts
    318
    IRIDIUM AIR-GAPS: have mentioned this on here a dozen or more times now. do NOT use a metal feeler gauge to change the air-gap on any iridium plug. why? get a magnifying glass....look at the inner surface of the ground electrode....and you'll see why. if you insist on gapping these plugs use something like a match-book cover folded over atop itself until its thickness approximates the gap you're seeking.
    John--Let me clarify. I am under the assumption that you are correct about damaging the plug by adjusting the gap. What I was meaning to say is that I check the gap before installing iridium plugs. If the gap is off I will get a new plug with the correct gap--I will not adjust the gap. The package where I order my plugs from online actually comes with instructions saying the plug is pregapped and to not adjust the gap

  8. #28
    Senior Member BuellyBagger's Avatar
    Join Date
    Apr 2010
    Location
    Nebraska City, NE
    Posts
    3,674
    I held a feeler gauge next to the electrode, then carefully opened up the gap a tiny bit by grasping the outside of the ground electrode with needle nose pliers and bending it away a bit then check again with the gauge until it looks like it'd just slide in the gap, did slide it in the one plug,didn't force it or anything.

    John, Did I fudge up?

  9. #29
    Senior Member
    Join Date
    Jan 2016
    Posts
    828
    It's fine. They just don't want you jamming the old school gapper into the electrodes and damaging them. Be gentle and adjust if needed by bending the electrode strap.

  10. #30
    Inactive
    Join Date
    Feb 2011
    Location
    AmishLand, PA.
    Posts
    7,526
    in essence what outlaw said. cody/michael....it goes like this: one of those nuances seldom observed or understood about ignition systems. all "precious metal" plugs such as iridium type also have a tiny dab of identical precious metal on the underside of the ground electrode. the ground electrode being the one that juts out from the threaded plug shell. the spark jumps from the center electrode to the tiny dab of precious metal affixed to the inner surface of the ground electrode. purportedly that method enhances not only the strength(voltage) of the spark but also an iridium plugs' well-known ability to ward off plug fouling. when you start dicking around with a standard feeler gauge to change the air gap inevitably you insert the gauge however gently between the center and ground and dislodge that dab of PM i mentioned above. at that point the plug is junk. i am NOT saying don't change the air gap....what i AM saying is that if you must, be delicate and use that tender loving touch and a "soft" feeler gauge tool such as plastic or match-book paper folded to correct thickness.



Page 3 of 4 FirstFirst 1234 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •