DETROIT (AP) — Despite a government shutdown, Hyundai and Kia are moving ahead with a recall of about 168,000 vehicles to fix a fuel pipe problem that can cause engine fires. The problem stems from improper repairs during previous recalls for engine failures.

The affiliated Korean automakers have been dogged by fire and engine failure complaints from across the nation. They're both under investigation by the U.S. National Highway Traffic Safety Administration, which has been trying to figure out whether initial recalls covered enough vehicles. But the agency is mostly closed due to the shutdow...