Tell-Tale...
I have no water coming form the bleed outlet on the back of my 99 Speedster Sk. I have ran the engines on a water hose and then plugged the hole on the jet drive with my finger where the water comes out and then water would come out the bleed outlet. I put the boat in the water and the same thing, I have to reach down and plug the hole to get water to come out the bleed outlet. The engines do not seem to over heat. I have taken the hoses loose that run to the outlet and blown them out but still nothing. Should I be worried? Is there something else I can check?
Thanks
The pressure on this tell-tale line is going to change with the speed of the boat. The jet pump is what builds your water pressure. At idle, you'll have only a trickle coming from that line. When your at wide open throttle, you should see a nice little pee stream coming out. Like Dr. Honda said, you could have some partial blockage in a line.
You can do a test if you'd like to put your mind at ease. First, the water hose is for backflushing your motor. You can't test your cooling system with a water hose because it's forced pressure from the city or your well. You need to test your cooling system while it's in the water, running under it's own power. If you look at the
exploded view, find hose #13. This is at the top of your tuned pipe and is normally tubed to the back of the boat as your tell-tale. On your motor configuration, they are using it as cooling to your exhaust system. This line is at the highest point of your motor. To ensure your motor is flooded and your pump provides cooling water to the engine, remove that line at the top of the tuned pipe to see how much water is coming from it. Don't remove the line until your ready because you don't want to leave the exhaust without that cooling water for too long. So, be ready. What I suggest is you have someone drive the boat. The hose will probably have a zip tie on it. If it's clamped, bring a zip tie with you to put it back on with. Get the boat up to about mid throttle, or just on plane. Now, take off that hose. If water is squirting out pretty good, then you got no worries and you've probably got a partial hose blockage somewhere.
Only run the motor with that hose off for less than 1 minute. It won't damage the motor if you run it longer but, try and have this done in that one minute or less.
There is one other think you might concern yourself with. The Rotax 2 stroke motor doesn't have a thermostat. To control the water flow through the motor, it has calibrated fittings. Looking at that exploded view, you'll see one of those fittings as part #4. If you have any of these calibrated fittings missing and someone has taken a standard pipe fitting to attach one of your water hoses with, this is going to affect your cooling system. So, look at that exploded view and make sure that everywhere you see a calibrated fitting, you have one on the motor in the same place.......:cheers:
