If your pleasure craft has a car or truck engine that has been converted for marine use what must it have to prevent the ignition of gasoline fumes?

If your pleasure craft has a car or truck engine converted for marine use, it must have a marine ignition system designed to prevent the ignition of gasoline fumes. This typically includes features such as a flame arrestor, which prevents any backfire from igniting vapors, and ignition components that are sealed or designed to reduce the risk of sparks. Additionally, proper ventilation must be ensured in the engine compartment to disperse any accumulated fumes safely.