I briefly left my gas cap off after refueling. The gas cap was only off for about 20 minutes while I drove home. Two days later, my car sputtered at start-up and shook. About 2 minutes later, the “service engine soon” light came on.
I’ve done very minor repair work on my car myself (e.g. replacing light bulbs), and I imagine this problem will be way beyond my capabilities. Is there anything I can do before calling the mechanic in the morning?
The gas cap is is pretty new, in good repair, and was replaced about a year ago.
Thanks so much.
2006 BMW 325i
About 92,000 miles