Why didn’t coolant leak out when hose disconnected?

[BuffaLoveBoat]

Hi, so today I took my 150 Speedster 215hp out and my [water] temperature warning buzzer went off. And if I remember correctly it was flashing exhaust problem or something. I killed the power and checked the engine. The hose on the port side came off and water was gushing in. From what I understand it is water returning “cooler” from the plate and that hose going to the engine. My question is why wasn’t it the green coolant? From seeing it in my panic it was just clear water. I did jump back there next to the hot engine and reconnected the hose and pushed the clamp back on then trolled back to the dock. Fortunately it did not come loose again on my 1mph journey back. I was buzzing around full throttle when the alarm went off and I assume that’s when the hose came loose. Does the pressure increase at high speed?

Also the coolant level did not go down even though a lot of that water came in, why is that?

Another question is why did that hose come off at all? Naturally I’ll hope it was just a loose clamp but I did actually tighten it down earlier this week (this is the second time this happened). Perhaps I simply didn’t tighten it REALLY tight enough. I hope that’s it. But is it more then that like is this really high pressure and there could possibly be a clog? (Of course that’s possible, anything is possible) but do they clog often?

I know I have asked a lot of questions but just looking for some feedback, especially about why it wasn’t green.

Thank you so much for your time.

 

[Sportster-2001-951C-Stock]

Most likely the factory recommended coolant isn't the green ethylene glycol but a pink organic coolant? I'm not sure what the actual Seadoo coolant color is, just a guess as most marine engines with closed loop cooling are using an organic coolant these days. Don't mix them unless you're certain they're compatible.

 

[BuffaLoveBoat]

For the 2008 Speedster it’s green

 

[go_panthers]

That looks like your exhaust cooling hose. The engine has green coolant and is closed loop, but the exhaust is cooled by raw water via pressure in the jet pump. So, yes the pressure will increase as you increase the throttle. That is why you saw water coming on, not coolant.

Good job reacting and not letting the boat sink. I would double clamp it, if it was my boat.

 

[gb387]

I agree, that looks like the exhaust cooling hose, that uses lake water. The other one looped up in the photo is the closed loop cooling that goes to the ride plate and contains coolant.

 

[BuffaLoveBoat]

That looks like your exhaust cooling hose. The engine has green coolant and is closed loop, but the exhaust is cooled by raw water via pressure in the jet pump. So, yes the pressure will increase as you increase the throttle. That is why you saw water coming on, not coolant.

Good job reacting and not letting the boat sink. I would double clamp it, if it was my boat.

Thank makes sense! Thank you!!

 

[BuffaLoveBoat]

I agree, that looks like the exhaust cooling hose, that uses lake water. The other one looped up in the photo is the closed loop cooling that goes to the ride plate and contains coolant.

Thank you!