# cylinder knocking sparkplug?

**URL:** <https://forums.speedlife.net/t/cylinder-knocking-sparkplug/221538>\
**Category:** SON240sx Automotive\
**Created:** [March 26, 2012, 8:30am UTC](https://forums.speedlife.net/t/cylinder-knocking-sparkplug/221538 "2012-03-26T08:30:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Gatecrasher3](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gatecrasher3/32/5617_2.png) [@Gatecrasher3](https://forums.speedlife.net/u/Gatecrasher3)\
**Post date:** [March 26, 2012, 8:30am UTC](https://forums.speedlife.net/t/cylinder-knocking-sparkplug/221538/1 "2012-03-26T08:30:14Z")

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So I started my car up for the first time this weekend and the plug closest to the firebay was jumping in succession to the rpm of the engin. I thought the plug was loose so when I tried to plus the plug back down it almost felt the cylinder was punching the plug end. Something I should be worried about?

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**Author:** ![sharpe\_corners](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sharpe_corners/32/5767_2.png) [@sharpe\_corners](https://forums.speedlife.net/u/sharpe_corners)\
**Post date:** [March 26, 2012, 1:56pm UTC](https://forums.speedlife.net/t/cylinder-knocking-sparkplug/221538/2 "2012-03-26T13:56:29Z")

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take it out. put it back in.

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**Author:** ![Clutchfire](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/clutchfire/32/5654_2.png) [@Clutchfire](https://forums.speedlife.net/u/Clutchfire)\
**Post date:** [March 28, 2012, 8:42am UTC](https://forums.speedlife.net/t/cylinder-knocking-sparkplug/221538/3 "2012-03-28T08:42:36Z")

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I cant completely understand what your trying to say. you need to look into your grammar.

From what i gather your spark plug wire on cylinder 4 is jumping around. that shouldn’t happen. that means your spark plug is just sitting in the hole and has not been threaded into the head. pull it out like sharp said put just the plug back in pop the right size socket on it and tighten it up snug. dont over tighten or you could strip it. then put your wire back onto the plug should be fixed.

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**Author:** ![ho\_bag](https://avatars.discourse-cdn.com/v4/letter/h/b5e925/32.png) [@ho\_bag](https://forums.speedlife.net/u/ho_bag)\
**Post date:** [March 28, 2012, 9:41am UTC](https://forums.speedlife.net/t/cylinder-knocking-sparkplug/221538/4 "2012-03-28T09:41:18Z")

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Did you strip the threads out?