Water Intake problems

[ramlax13]

Hey Everyone,

I have an old 1990 SeaDoo bombardier that my uncle bought new way back when. Last year I got it running again after sitting unused for a few years until he handed it over to me. It worked great while it was running, though the steering was a bit tight. While riding it one day, I hit some rough water and a few minutes later the engine alarm began to go off. I shut down the ski, and waited 10 minutes. When I reattached the lanyard it continued to buzz so I started it back up and got it back to my beach nice and easy, I was only 2 minutes away. When I pulled it out on the beach and opened the engine compartment it was half filled with water. I drained the water immediately and took it back to the house to run it on fresh water. When I connected the fresh water hose and ran it the water just comes out from underneath the engine somewhere. My guess is a water intake hose popped off or something. I am planning on trying to repair this myself, but since I cannot see or feel the hose, I may have to take off the engine or some other parts. If anyone has any info on the best way to do this, or any tips, manuals, guides, anything I would really appreciate it. Thank you very much for your time.

As I mentioned before, the steering was pretty hard to turn the handlebars, so if anyone has any suggestions to fixing that they would be greatly appreciated as well, but obviously their not the main focus of the repair as of now.

(The engine is a seadoo 587 Yellow, as I mentioned before, either a 1990 or 91 year, two seater)

 

[ScubaDoo]

Welcome to the seadoo forum ramlax13.It sounds like you have a water cooling hose that came disconnected. The beeping that was steady was a "Hot Engine" beep that it was overheating. The sender on the top of the engine is what signaled that it was getting hot and gave the solid beep. You could check all the cooling lines inside and see which one is leaking. I would replace all of them so you know they won't split somewhere else after a repair. The lines aren't expensive and you could get them at AutoZone or similar auto parts store. Keep us posted and if you need help or advice give us a post.

Scubadoo

 

[kustomkarl]

Welcome to the seadoo forum ramlax. This is a friendly place with lots of active members eager to help out. :agree: I agree with scubadoo.
If you want you could join as a "premium member" As premium member you can down load a authentic seadoo manual from the seadoo manual library. In the library is a variety of manuals for almost all years and models. You can view as many as you like on line as a PDF file, or download it and print it for your personal and privet use. There are operator manuals and repair manuals for you to do your own repairs on your seadoo. The repair manuals have everything from troubleshooting, repair procedures to winterizing. It contains wire diagrams torque specs and pictures for disassemble and assemble instructions. In the spec sheets it tells everything needed to maintain oil changes, spark plug gaps and impeller wear ring tolerances. Click on the "Seadoo Manuals" link at the top of the page for more details. If you need any help or get in a jam, we are always here to answer your questions too.:cheers:

Karl

 

[ramlax13]

Welcome to the seadoo forum ramlax13.It sounds like you have a water cooling hose that came disconnected. The beeping that was steady was a "Hot Engine" beep that it was overheating. The sender on the top of the engine is what signaled that it was getting hot and gave the solid beep. You could check all the cooling lines inside and see which one is leaking. I would replace all of them so you know they won't split somewhere else after a repair. The lines aren't expensive and you could get them at AutoZone or similar auto parts store. Keep us posted and if you need help or advice give us a post.

Scubadoo

Thanks so much, I guess that confirms what I had originally thought was the problem. My next question is how hard will it be to replace all of these hoses? Will I need to remove the engine at all or any other parts?

 

[Skatman]

Water lines....

There are no water lines under your motor. You shouldn't have to pull the motor to replace/repair your cooling sysem hoses. You may have one line, it's about 1/4" going from your exhaust to your resonator in the back. I'm not to familar with the 587 motors, but one thing I'm sure of is that you don't have lines under the engine.

 

[ramlax13]

There are no water lines under your motor. You shouldn't have to pull the motor to replace/repair your cooling sysem hoses. You may have one line, it's about 1/4" going from your exhaust to your resonator in the back. I'm not to familar with the 587 motors, but one thing I'm sure of is that you don't have lines under the engine.

Right, I didn't think so either, but when I hook up the freshwater hose and run it the water seems to be leaking from underneath the engine, not directly underneath, but pretty far down. If I stand at the back of the ski and face towards the handlebars, the water leads from the right side down below somewhere.

 

[ramlax13]

I just looked at the 1990 service manual and took a look at the water cooling schematics. I learned that the hose hookup is actually hooked up to an exaust out, and it seems to backwash into it to freshwater flush. With this said it means that the waterline that has snapped off was an water cooling out one, since when I hook up the fresh water hose it comes out immediately. The hose is on the right side of the motor, and comes out from it. If anyone has access take a look at the schematics of the 1990 seadoo and please verify this for me. If anyone knows how far down this hose hooks up to the motor and could tell me would be great, and how I should go about fixing this.

 

[kustomkarl]

What is the exact model of seadoo, besides it being a 1990. I can check in the manuals but the exact model would save me opening all the manuals... I'll guess and look in the meantime too.

Karl

 

[ramlax13]

I believe it is the 1990 SP model, which is the white body with yellow seat and blue front. It is the 2 seater.

 

[Skatman]

Sorry!

Sorry for the overlooked waterline. There is a small line, about 1/4 I.D., that runs under the engine. It connects to the tuned exhaust at a small elbow and runs to your water regulator at the resonator, which is the last part of your tuned exhaust system.
If this is disconnected and running into your hull, that means it's not suppling water to the regulator. This can do serious engine damage.
Sorry to not have thought that through the first time. I think I was focused on the actual engine cooling itself!.....so, get that line hooked back up!

 

[ramlax13]

Sorry for the overlooked waterline. There is a small line, about 1/4 I.D., that runs under the engine. It connects to the tuned exhaust at a small elbow and runs to your water regulator at the resonator, which is the last part of your tuned exhaust system.
If this is disconnected and running into your hull, that means it's not suppling water to the regulator. This can do serious engine damage.
Sorry to not have thought that through the first time. I think I was focused on the actual engine cooling itself!.....so, get that line hooked back up!

So that said, how would I access this water line? Do I have to take the engine off?

 

[kustomkarl]

No the water lines runs to the round black item on the exhaust system. It has a clip on it, you can't miss it...I hope. Just attach the water line to it. Give us a shout if you can't figure it out.

Karl

 

[Parrothead757]

No the water lines runs to the round black item on the exhaust system. It has a clip on it, you can't miss it...I hope. Just attach the water line to it. Give us a shout if you can't figure it out.

Karl

Not trying to thread jack, but what is the "round black item"? I see three total in there, and am curious what their function is?

 

[kustomkarl]

The 3 round items you are talking about, 2 on the engine are RAVE,(Rotax Adjustable Variable Exhaust)valves. The valves adjust as the rpm's go up or down and vary the opening size of the exhaust port. This allows the engine to rev higher and produce more H.P. The other round item is in the resonator of the exhaust muffler and is a water regulator. The water passes through it, get slightly heated up, and then passes into the rest of the engine to cool it down. (they really aren't hockey PUCKS)...

Karl

 

[Parrothead757]

The 3 round items you are talking about, 2 on the engine are RAVE,(Rotax Adjustable Variable Exhaust)valves. The valves adjust as the rpm's go up or down and vary the opening size of the exhaust port. This allows the engine to rev higher and produce more H.P. The other round item is in the resonator of the exhaust muffler and is a water regulator. The water passes through it, get slightly heated up, and then passes into the rest of the engine to cool it down. (they really aren't hockey PUCKS)...

Karl

Sweet , thanks!