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  1. #1

    cylinder number 2 120 lbs

    1 and 3 are 145 lbs, cylinder number 2 is 120? what can i do to fix.
    also watching the carb do its work, seems cylinder number two is getting less oil dripped in?


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Have you had a look inside the cylinder yet?

    What does the piston wash pattern look like?

    Has the fuel system been serviced, and the carbs cleaned in recent memory?

    Click the links below

    Polaris Domestic (red) engine

  3. #3

    service

    what do you mean service the fuel sytem, i got all the old fuel out and treated it with stabil. this seemed to work very well. i have not looked at the cyclinder

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by justmyskin View Post
    what do you mean service the fuel system?

    ...I got all the old fuel out and treated it with stabil. this seemed to work very well. i have not looked at the cylinder
    Per this web page, the original gray Tempo fuel lines are known to cause clogging in the fuel system, especially inside the carburetors.

    If the carburetors have not been opened up and cleaned, the small internal filters tend to clog over time (even if the fuel lines have been upgraded). This restricts fuel flow into the engine, which in turn can cause piston damage.

    The common approach is to assume the fuel system and carburetors have not been well maintained, and work from there.

    At this point, recheck the compression readings - all spark plugs out, throttle held wide open.
    If the center cylinder is still much lower, remove that cylinder head, and have a look.

    If you post a few clear photos here, we can often tell what caused the damage, or at least what the next steps would be
    Piston at the top, and piston at the bottom, showing the cylinder walls.

  5. #5
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    He didn't mention which model he has, and I seem to remember there was a model that had a different head for the middle to lessen compression? I'm thinking it was a 1050? 9 hundy? I still wonder why they did that?

    Just a thought.

  6. #6
    Rasta Mon Condoms We Be Jammin!!!!! TxVirageTx's Avatar
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    groupk

    i remember group k doing that with there hammer kits to the polaris 1050's with pipes

  7. #7

    middle cylender

    it is indeed the middle cylinder? it seems to run good for the most part. it could use a thorough carb cleaning.

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