What to Do When Your Jet Ski Overheats
You're out on Lake Bridgeport having a great time, and suddenly your temp gauge spikes or the overheat alarm goes off. Don't panic — here's exactly what to do:
Step 1: Reduce Speed Immediately
Don't keep riding at full throttle. Slow down to idle speed. The jet pump needs water flow to cool the engine, but reducing RPM lowers heat generation.
Step 2: Check for Debris
The #1 cause of overheating on Lake Bridgeport? Weeds, rocks, or a plastic bag blocking the intake grate. Kill the engine, tip the ski if possible, and clear any debris from the intake.
Step 3: Don't Kill the Engine Right Away
Counter-intuitive, but keeping the engine at idle lets the cooling system continue circulating water. If you shut it down immediately, residual heat has nowhere to go.
Step 4: Check the "Pee Stream"
Look for the telltale water stream that shows your cooling system is circulating. No stream = no water flow = impeller or pump problem.
Step 5: Get Off the Water
If temps won't come down, idle slowly to the nearest ramp or dock. Do NOT continue riding — you risk seizing the engine.
Common Causes of Overheating
- Blocked intake grate — debris, weeds, rocks
- Failed impeller — worn or damaged blades can't pump water
- Worn wear ring — gap between impeller and ring reduces flow
- Clogged cooling passages — scale or corrosion buildup
- Faulty thermostat — stuck closed
Need Help?
If you're stuck on Lake Bridgeport, call us at (817) 915-3266 for emergency on-water assistance. We also do impeller and cooling system service at your dock.