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    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    I run my motor at my driveway thus morning. it seemed good. the water temperature wad about 50 . but it seems a lot of steam. Is it good?
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    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    I have started my motor in my drive way. then 5 minute later I stopped it snd did the pteddure testing. To my surprise that pressure ate 130 130,128,130. but they were 145,155,165,150. Did the seller cheap me? I took all the spark plug off before testing
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    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    I found the wires have been cut and I do not know Where I should connect it as in thr picture
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    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    Does my motor work perfectly or something was hidden even I passed the pressure testing and running testing? I also checked the engine oil after the seller stopped running the motor He said it is golden color. but wr only run tbe motor maybe 5 minute with water cooling. Yesterday I open the cap...
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    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    How heavy is the motor 2.5 and 3.0? I just confirm the weigh of 3.0 is about 567 lbs (257.5kg)
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    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    I have measured the length and width. They are the same dimension. Thank you
  7. L

    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    The serial NO. is 0B876780, The year is between 1988 ~1989. But my seller told me the year is 1994
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    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    It seems that both of thme are connected to the water in take? What happen if I just leave the two lines alone? water will leak?
  9. L

    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    I do not know where I should connect these two lines
  10. L

    replace Mercruiser 2.5L 1989 with Mercruiser 3.0 1994

    Today I bought a Mercruiser 3.0 1994. All cylinders pressure are higher than 145. I will remove old 2.5L and mount 3.0, then connect 3.0 to the old wires.is it easy? But I have found there are different between 3.0 and 2.5. Can anyone help me to upgrade?
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    Mercruiser 2.5 or 3.0 winterization

    I saw a video pour anti freezen water into engine through hose and without drain it out. Should I drain it out ?
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    1989 Mercruiser 2.5L 120HP motor overheating trouble shooting

    Do you prefer to hold antifreeze in the block or you like ti drain it out while doing winterization for Mercruiser 2.5 or 3.0 l Mercruiser motor?
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    Best oil for a Mercruiser 3.0L?

    How much engine oil and How much gear oil should be pushed for mercruier 3.0 L motor?
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    going to buy a used mercruiser

    I just cannot believe that the pressure are more than 150 PSI for thr 1987 Mercruiser motor. sure I will do the pressure testing again even water running testing
  15. L

    going to buy a used mercruiser

    Yes. I am going to upgrade the boat
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    going to buy a used mercruiser

    i I will buy the boat and the motor
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    going to buy a used mercruiser

    How come the pressure are more 150 PSI for the year of 1989 3.0L mecruiser motor? is it rebuilt? Can I buy the boat. should I test in the water. what should I pay attention ?
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    going to buy a used mercruiser

    the fourth is an video. So I did not upload it. but it showed more than 150 psi. I remembered he batter was not charged regularly and only cranked it two time's when I tested it and they were 110， 110 PSI. then I gave up because the third and the fourth are blocked by tbe riser. now he tested...
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    going to buy a used mercruiser

    A few ago I tested 1989 mecruiser motor and first and second are about 110 psi. So I quit continue to test the rest. He sent me his testing reading are more than 150. Is it possible?
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    1999 90HP Merury 2 stroke outboard winterization

    Thank you
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