Q:I have read all three “Rough Running” articles and have a question. Part 3 specifically addresses 1982-1995 (OBD-I) EFI problems and talks about diagnosing fuel injection problems using a scanner. I ...

The world of car diagnostics has changed a lot over the last 50 years. Back in the '70s and earlier, a mechanic's most valuable diagnostic tools were usually their eyes and ears. You could figure out ...

The second iteration of on-board diagnostics, OBD II, has been required tech on all new cars sold in the U.S. since 1996. That means that anyone who uses or works on cars less than three decades old ...