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    300/440/550 Water Sitting in Engine

    Thanks for the input. I'm probably gonna run with it and see how far it takes me. Any suggestions on something I can run through it to better my chances? Sea foam, or some sort of rust prevention maybe? Will increasing my gas/oil mix help at all?
  2. N

    300/440/550 Water Sitting in Engine

    Hi guys, I've been reading a lot on this forum and decided to finally make an account. I've been working on small engines for a few years now, but I just got into PWCs and bought my first project a couple weeks back. Its a '85 JS550, bought it in pieces with a freshly rebuilt top end and pretty...
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