What to do when your car shows ur ” check engine” or ” system compression ” sign .?
check engine light usually refers to the ecu, but could also relate to a mechanical failure a sign to get it to a repair station, not being to sure of your seriousness in your neighbors car, don’t know from your description of the sounds it makes but you seem to think it was over wound, that would explain the don’t make the right noise, higher than normal revs could damage a valve spring or crack a piston, don’t ever ask to drive my car dude!