# Gapping spark plugs **URL:** \ **Category:** SON240sx Automotive\ **Created:** [October 2, 2008, 10:15pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922 "2008-10-02T22:15:21Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Specialedition](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/specialedition/32/5714_2.png) [@Specialedition](https://forums.speedlife.net/u/Specialedition)\ **Post date:** [October 2, 2008, 10:15pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/1 "2008-10-02T22:15:21Z")
i just changed my plugs and now im getting some mild back fire over hard acceleration, i need to gap the plugs but dont know how. So my question is how do i gap the plugs? thanks ---
**Author:** ![h.240](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/h.240/32/3214_2.png) [@h.240](https://forums.speedlife.net/u/h.240)\ **Post date:** [October 3, 2008, 11:20am UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/2 "2008-10-03T11:20:46Z")
[http://www.ehow.com/video\_110\_replace-spark-plugs.html](http://www.ehow.com/video_110_replace-spark-plugs.html) - go to about 2:06. ---
**Author:** ![Specialedition](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/specialedition/32/5714_2.png) [@Specialedition](https://forums.speedlife.net/u/Specialedition)\ **Post date:** [October 3, 2008, 1:27pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/3 "2008-10-03T13:27:47Z")
ah jeez now i need to go buy a gapping tool, thanks h.240 ---
**Author:** ![spanks](https://avatars.discourse-cdn.com/v4/letter/s/a88e57/32.png) [@spanks](https://forums.speedlife.net/u/spanks)\ **Post date:** [October 3, 2008, 1:36pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/4 "2008-10-03T13:36:30Z")
if they are ngk they are supposed to be already pregapped so you shouldnt have to and if your putting any other name brand of plug which i wouldnt personaly wouldnt recommend you may not be happy with gas mileage ---
**Author:** ![Specialedition](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/specialedition/32/5714_2.png) [@Specialedition](https://forums.speedlife.net/u/Specialedition)\ **Post date:** [October 3, 2008, 2:43pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/5 "2008-10-03T14:43:51Z")
> [@DYNO RESULTS.](https://forums.speedlife.net/t/dyno-results/18587/7): > > if they are ngk they are supposed to be already pregapped so you shouldnt have to and if your putting any other name brand of plug which i wouldnt personaly wouldnt recommend you may not be happy with gas mileage i only put ngk in my car, this time was idiridium ix series although the model i think is for a rb20, but either way i bought the gapping tool a wopping 3.24 at c-tire. ---
**Author:** ![Specialedition](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/specialedition/32/5714_2.png) [@Specialedition](https://forums.speedlife.net/u/Specialedition)\ **Post date:** [October 3, 2008, 6:16pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/6 "2008-10-03T18:16:47Z")
ok so my attempt of gapping the plugs was unsuccessful, the gapper that i bought is made out of cheap materials so when i was gapping the tip broke off because it got stuck in the gapper, This makes me angry ---
**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\ **Post date:** [October 3, 2008, 10:00pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/7 "2008-10-03T22:00:06Z")
What tool do you use? I just got a gauge (see pic below) and then put the proper file between the gap and then put the sparkpug in a vice and tightened. Works fine :dunno: The gauge: ![http://www.gonrad.com/200810/sparkpluggauge.jpg](http://www.gonrad.com/200810/sparkpluggauge.jpg) ---
**Author:** ![Specialedition](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/specialedition/32/5714_2.png) [@Specialedition](https://forums.speedlife.net/u/Specialedition)\ **Post date:** [October 4, 2008, 9:40am UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/8 "2008-10-04T09:40:55Z")
i used the circle gapping tool, but its fine now i bought a new set of plugs and everything. the car hasnt pulled this hard since i bought it! ---
**Author:** ![renegade141](https://avatars.discourse-cdn.com/v4/letter/r/ba8739/32.png) [@renegade141](https://forums.speedlife.net/u/renegade141)\ **Post date:** [October 4, 2008, 12:59pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/9 "2008-10-04T12:59:59Z")
> [@DYNO RESULTS.](https://forums.speedlife.net/t/dyno-results/18587/7): > > if they are ngk they are supposed to be already pregapped so you shouldnt have to and if your putting any other name brand of plug which i wouldnt personaly wouldnt recommend you may not be happy with gas mileage they may be pregapped from the factory, but it doesn’t gaurantee them not being damaged/bent during shipping. Sometimes they don’t have the cardboard sleeves to protect it. so yeh, you always need to double check the gap. Don’t forget to anti-sieze the threads too. you wouldn’t want the plugs to get siezed in the block. this usually happens to high mileage cars though that never get a tune-up. ---
**Author:** ![Specialedition](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/specialedition/32/5714_2.png) [@Specialedition](https://forums.speedlife.net/u/Specialedition)\ **Post date:** [October 4, 2008, 10:21pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/10 "2008-10-04T22:21:58Z")
> [@DYNO RESULTS.](https://forums.speedlife.net/t/dyno-results/18587/16): > > they may be pregapped from the factory, but it doesn’t gaurantee them not being damaged/bent during shipping. Sometimes they don’t have the cardboard sleeves to protect it. > > so yeh, you always need to double check the gap. Don’t forget to anti-sieze the threads too. you wouldn’t want the plugs to get siezed in the block. this usually happens to high mileage cars though that never get a tune-up. indeed i did this already, although im a nazi when it comes to my cars maitenance, so no problems here ---
**Author:** ![cailesj](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cailesj](https://forums.speedlife.net/u/cailesj)\ **Post date:** [October 6, 2008, 1:27pm UTC](https://forums.speedlife.net/t/gapping-spark-plugs/118922/11 "2008-10-06T13:27:05Z")
jeez, that womans voice, on the video just pisses me off.