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  1. #1

    Arrow 2003 genesis 1200 fuel injected

    Just got this ski rode good first few days I had it. Then it started to bog down real bad no matter the throttle position. So I took advice and did compression test was 90 130 130. Then was told about wet compression test after normal. That increased it to 105 135 150 so Iím assuming rings are bad but anything else I got to look for or replace thanks in advance for any input


  2. #2
    Moderator HiPeRcO's Avatar
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    Welcome to Greenhulk!

    -Your compression is low but not likely the cause of your bogging issue
    -The fuel pressure regulator MUST be fixed, its possible that yours has fallen off and might have already damaged the PTO cylinder due to lean burn
    -You might have a bad throttle position sensor (TPS). If the ski is bogging at all throttle positions when on the trailer, that is likely the cause of your bogging issue.

  3. #3
    Click avatar for tech links/info K447's Avatar
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    Welcome.

    Do not assume there is only one problem occurring. The low compression may not be Ďcausingí the sudden change in throttle response. Indeed, the actual problem cause may have nothing to do with cylinder compression.

    Start with this link, then read up on the Ficht engine sections.
    http://polarispwcknowledge.shorturl....t-things-to-do

  4. #4
    Sorry should have put in original post runs amazing on triller with hose but as soon as it hits water it’s wanting to bog fuel pressure is good

  5. #5
    And not assuming at all I’m very novice in mechanical department so few people I’ve talked to say that compression could cause that and with wet compression the oil will help seal and if it increases your rings are bad...how do I check if it’s running lean or rich

  6. #6
    Moderator HiPeRcO's Avatar
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    The EMM controls fuel mixture on a DI machine so there isn't much to talk about regarding "lean" or "rich"

  7. #7
    Okay so it adjusts itself for air to fuel mixture and I also bypassed oil pump and only use premix

  8. #8
    Moderator HiPeRcO's Avatar
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    OH NOOOO! YOU CANNOT PREMIX A DI!! THE CRANKSHAFT IS NOT GETTING ANY OIL

  9. #9
    Like I said not mechanically inclines on these lol okay so I tore heads off piston head and cylinders are good no grooves or any damage and I’ll unblock oil pump y do they sell one for a genesis if u shouldn’t do it

  10. #10
    Moderator HiPeRcO's Avatar
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    OK, sorry to have seemed like I was shouting, but I needed to convey the seriousness of the issue.

    All Polaris 1200 and 800 oil pumps are the same, and maybe even the same on earlier models. You should have no issue finding a good used one (since they never go bad)

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