2004 Seadoo 4 Tek Winterization

[donmat23]

I have a 2004 155 with a 4 tek engine. It has closed cooling and is not supercharged. My question is, is it necessary to pump antifreeze into the exhaust manifolds etc .in the raw water section or not. From what I have read it is not necessary as long as you run the engine enough to dispell any water in the system after taking it out of the water and flushing. The manual only addresses the closed system and the need to check the coolant and replace if necessary.

 

[devonte007]

My understanding is the 155hp N/A engines are supposed to be self draining, meaning you do not need to take any special procedures to winterize the exhaust cooling system. I still do it for piece of mind though, costs a few bucks and a little time but I sleep good all winter knowing it's safe in the cold. Why risk it, it is up to you though. You still need to perform all the other winterization tasks though.

 

[donmat23]

That's my understanding also but wanted to confirm. I will still do it but plan to use the "pink" 50/50 mixture which should suffice in this case as it will be going into a drained system and will likely all be expelled when done. thanks for your reply.

 

[devonte007]

Glad to help. Here is a thread I recently posted showing how I pump the antifreeze through the system if you haven't yet come across it:
http://www.seadooforum.com/showthread.php?54401-Pumping-antifreeze-speedster-winterization&p=284316#post284316

 

[donmat23]

Yes I did see this and had already made a copy of it. Nice writeup.

I have a similar setup I use for my yamaha 4 stroke outboard except I gravity feed to muffs on the motor instead of using a pump. I actually recover most of the antifreeze and reuse (I test the antifreeze to make sure it stays at full strength). In this case also it is self draining but I do it for extra safety. It gets pretty cold in Maine!!

I may try the gravity approach with the Seadoo to see if it will work. I don't see why it wouldn't. In the case of the Seadoo I will have to open the antifreeze valve after I start the engine while with the yamaha it has to be opened before.

Thanks again for the info.

 

[Jinwoo]

Hi,

Have you tried gravity fed approach?

Thanks

 

[donmat23]

I haven't tried it yet with antifreeze but did try it with plain water and the water went through just fine. I connected a hose up to the flushing port and put a funnel in the end of the hose and poured it in, after starting the engine. When it came through I quit pouring and shut off the engine. I hope to get to the real thing this weekend when I do the rest of the work (oil change, fogging etc)

 

[Jinwoo]

Cool,

Thanks for the info