This started recently, my gas tank was almost empty when I started to feel a misfire through the steering wheel, I figured it was because my gas tank started to get low. I put about more than half a tank and still the same. It’s been getting a bit worse. I check the gap on my spark plugs and they are all gapped correctly, also put back my stock coil packs, have whoosh ones and same issue. I work about 15 min away all street driving, all stop signs. I’m monitoring misfire count and on the way home today I only got one misfire, but as soon as I got home and let it idle the misfire count climbed pretty fast. Been sitting here about 10 minutes and misfire count is at 56. Idle is kinda rough compared to how it was last week. No codes yet. I’m thinking evap harness. Car isn’t misfiring under load and doesn’t seem low on power. Car has 67k. Car has an S280. Any ideas ?
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