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Yamaha VX Deluxe jetski overheating when under load. Tech Tuesday. 

Rene Clausen
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Jetski is overheating, only when under load and everything is normal otherwise. Meaning you can flush it and run idle and no overheat warning is coming on. The minute you give power and sail for a little distance approximately 700 yards, the jetski overheat and goes into limb mode.
Here is the possible failure and solution to this problem, and how to solve it.
the jetski used here is a Yamaha VX deluxe, however this could be the case on any jetski out there, which has been in salty, dirty or sandy waters. They simply ingest the salt, sand and dirt and cloggs the coolant system.
enjoy and work slowly towards to finish line. no rush is recommended .
enjoy best regards Rene

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23 авг 2023

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Комментарии : 5   
@ericpeterson8904
@ericpeterson8904 6 месяцев назад
Thanks ao much, mine is having the exact same issues as yours. I bought it a few years ago from my brother, he had a similar issue and removed the head, it worked fine for a while and now it's happening to me. I think I'll try what you did first. Thanks for the very informative video!
@techtips101
@techtips101 6 месяцев назад
Thank you for watching and commenting. If you are lucky this will take care of your problem. However if it is worse then it might be necessary to change the cylinder head to solve the problem. You can also back flush it to see if there is an ingestion problem from a seashell in the tubing. I have a very recent video on cylinder head assembly with the same issue here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-WfFiVE-oODw.htmlsi=p2i2TkUvg7kPZg7g I hope this will get you on the right path to success. Sail safely, best regards Rene.
@jordangood7414
@jordangood7414 10 месяцев назад
Did this solve the problem?
@techtips101
@techtips101 10 месяцев назад
Thank you for watching and commenting, yes it did take care of the problem - if I couldn’t get this clogging out I would have had to remove the head and change the head gasket too and it would have been a lot more work to accomplish. The foreign object that goes in here crystallizes and that’s why it clogs up. Hope that helps Sail safely, best regards Rene
@techtips101
@techtips101 5 месяцев назад
In the end I had to get a new Cylinder head as this was totally clogged as well, when I took it apart. Here is the link for that video : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-qZGHGQ2RLf4.html sail safely, best regards Rene
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