# Cylinder 2 Misfire - 2016 Sonata **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [August 3, 2026, 5:42pm UTC](https://community.cartalk.com/t/cylinder-2-misfire-2016-sonata/206005 "2026-08-03T17:42:11Z")\ **Posts on this page:** 1\ **Showing post:** 3
**Author:** ![davesmopar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/davesmopar/32/41750_2.png) [@davesmopar](https://community.cartalk.com/u/davesmopar)\ **Post date:** [August 3, 2026, 6:35pm UTC](https://community.cartalk.com/t/cylinder-2-misfire-2016-sonata/206005/3 "2026-08-03T18:35:18Z")
Could be the gas you bought, and or the additive… How often are you adding additives to the fuel tank and or engine oil?? > [@Car Shakes - 2016 Sonata](https://community.cartalk.com/t/car-shakes-2016-sonata/191562/49): > > OK, thanks, now we are getting somewhere, from what I am finding, the DENSO ZXU20HCR8 (Denso 3479) spark plug in your picture fits the Hyundai Accent and Veloster, the preset plug gap is 0.031"… The correct OEM spark plug is NGK SILKR7E9 (NGK 95229) and preset plug gap is 0.035"… Getting conflicting info about the correct plug gap, seeing 0.035" or 0.043"/0.044"… I am only seeing O’Reilly auto parts and Napa auto parts carrying or the dealer carrying the spark plugs $20 each and up… AutoZone a… This was discussed in the thread above and possibly one or two other threads… Still unanswered questions from the above thread… Either you (or shop) are installing the wrong spark plugs, which I covered in prior post, or counterfeit and or non dealer parts, or you possibly have an electrical issue… Maybe your buying cheap gas??? Might be time to find an automotive electrical specialty shop… --- _[View the full topic](https://community.cartalk.com/t/cylinder-2-misfire-2016-sonata/206005)._