u/Cute-Oven3538

2004 Element with 225K miles. Engine ran smooth, then overnight, it's sputtering bad. Filled up with gas 3 days prior, and didn't drive too much before issue. Scanner shows 5 misfire codes. I've added ISO Heet and letting that set overnight. Can all 4 plugs and/or ignition coils crap out at same time? Is it really that bad to use Amazon Iridium Plugs vs. NGK or Denso? Thank you.

reddit.com
u/Cute-Oven3538 — 9 days ago