2018 Subaru Forester — single-cylinder misfire comes and goes

This is usually cheaper to test than to guess. If a shop can't duplicate it on the 2018 Subaru Forester, bring a video plus freeze-frame data, not just a story. You'll know quickly if you're on the wrong tree. If they can't show the line item, I assume it's hiding. A day of patience here is cheaper than a wrong part. I already checked the easy fluid levels.

Log the conditions before you spend. Capture voltage while the 2018 Subaru Forester is actually failing — after it restarts you've lost the clue. Save the big job until that test fails. On “single-cylinder misfire comes and goes,” that was the fork that mattered for me. Did the worksheet show tax yet? If that fails I'll eat the diagnostic fee.

Start with the test that can prove you wrong. Move a coil or plug on the 2018 Subaru Forester if it's cylinder-specific and see whether the code follows. Save the big job until that test fails. This is from a 2018 Subaru Forester in San Antonio. Any freeze-frame data saved? If this is nothing, great. I want that in data.