Bad battery or alternator, or simply ran out of gas
Probably the alternator.
If a boat shuts down while running, it’s usually a fuel or electrical issue. Common causes: fuel starvation (clogged filter, bad pump), overheating, or a safety kill switch/loose wiring cutting power. Start with fuel flow and battery connections those fix most cases fast.
no gas
Crank trigger
check fuel pump or ignition system
fuel pump
Check timing/timing belt
A car shutting off while driving is usually caused by loss of fuel, spark, or power. Common reasons: Fuel issues: empty tank, bad fuel pump, clogged filter Electrical problems: weak battery, bad alternator, loose wiring Ignition faults: failing spark plugs or ignition coil Engine sensors: faulty crankshaft or camshaft sensor Overheating: engine shuts down to prevent damage Air intake issues: clogged air filter or throttle problems Quick tip: If it restarts after a few minutes, it’s often a sensor or fuel pump overheating issue.
Trucks need gas.
toyota mr 2
if it tends to sputter and have no power i would suggest the fuel pump. it it is only after the car has warmed up, or a while after you start driving it might be the ignition module.
Ford f350 super duty shut off and lose power while driving