If your outboard motor is hard starting, losing power, stalling, or running rough, the fuel system could be the problem. In this guide, Next Level Marine breaks down the most common outboard fuel delivery issues, including clogged fuel filters, bad fuel pumps, air leaks, water in fuel, injector problems, and vapor lock. Learn the warning signs, common causes, and basic troubleshooting tips to help keep your outboard running reliably on the water.

Common fuel issues, symptoms & repairs for Mercury outboards — plus preventative maintenance tips to help you avoid getting stranded.