Typical signs of water ingress: rough idle, white smoke, or a no-start after wading. Do not re-crank — hydro lock can bend connecting rods.
Emergency steps
- Shut down, disconnect power, tow the vehicle out of water.
- Drain oil and coolant; check for milky emulsion.
- Inspect the air box and intake; open up the cylinders at a service point if needed.
Prevention
Avoid water above bumper height, check air filter sealing in rainy seasons, and consider a raised air intake.
