I just picked up a 99 speedster SK with the twin 720's. I took it out Saturday for the first time with absolutely no issues and again on Sunday when I got the continuous "BEEP" after idling for a few minutes. After hitting this forum while in the boat I learned that I had at least one engine overheating. After shutting it down for 10 minutes she fired back up and I had no further issues. Now on to my question.... Today I ran the engines w/ the garden hose to verify flow and got two results. The starboard engine had water flow out the exhaust (good) and the larger port on the right (starboard) side only. The port engine also had flow through the exhaust (again good) as well as the same right side port but also through the smaller port on the left bottom (port side) near the bottom of the pump. Sorry for no pictures as I can get them later if necessary. Which pump is doing the correct thing?
-
This site contains eBay affiliate links for which Sea-Doo Forum may be compensated.
Which ports should water flow through while flushing with a hose?
- Thread starter nlconner
- Start date
- Status
Waterluvr
New Member
Welcome to the forum, I think seeing the factory manual diagram might help you understand better how all the cooling system hoses are routed. When you start the engine and use a hose to supply water from the transom flushing port all you are doing is back flushing the normal route of water where it enters the head.
You can see in the diagram where I drew the red arrow that is your normal incoming supply line from the jet pump, when on the trailer and hooked to a hose water is coming in from the flusher line with the blue arrow and where it T's into the top flusher line with the green arrows that is the reason for the cap on top of the engine bay. The rear flush line can be pinched before the T and you can make use of that top plugged cap to pour antifreeze into the motor for winterizing.
That's it, the only thing that changes is the side of the head water back flushes in from and subsequently you will have water discharging from the jet pump supply line and all the exhaust side hoses and tell tale line function normally to discharge water when flushing.
You can see in the diagram where I drew the red arrow that is your normal incoming supply line from the jet pump, when on the trailer and hooked to a hose water is coming in from the flusher line with the blue arrow and where it T's into the top flusher line with the green arrows that is the reason for the cap on top of the engine bay. The rear flush line can be pinched before the T and you can make use of that top plugged cap to pour antifreeze into the motor for winterizing.
That's it, the only thing that changes is the side of the head water back flushes in from and subsequently you will have water discharging from the jet pump supply line and all the exhaust side hoses and tell tale line function normally to discharge water when flushing.
- Status
Similar threads
