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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
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    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
  11. L

    1999 90HP Merury 2 stroke outboard winterization

    What is the steps for the steps of winterization? Should I put the antifreeze into the engine? Thank you
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    going to buy a used mercruiser

    I just buy a motor to replace my old low cylinder pressure motor.
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    going to buy a used mercruiser

    I am going to buy a used 1989 2.5L mercruiser. He said the fuel pump is weak. But the cylinder pressure are about 140~145psi. I will run it with water to check if there is any water leaking into oil or not. What other should I pay attention? Does pressure good mean good motor or not? Thank you
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    Can the base of engine work? Two to bolts under engine are rusted and can

    Yestetday it worked very well the full speed was 34mph. there was only two person on the boat.
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    1989 Mercruiser 2.5L 120HP motor overheating trouble shooting

    Today two people were in my boat and it run very well. The full speed is 34mph when returning after 7 hours in the water.
  16. L

    a boat

    you are right. I insisted on the water testing. He said OT has been winterization. but the boat was sold at the second day
  17. L

    a boat

    just start it and then shut it off immediately
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    1989 Mercruiser 2.5L 120HP motor overheating trouble shooting

    Can anyone help me the trouble shotting of the overheat of my motor?. For my understanding the water can be intaken and the water can flow out. But why is it so hot and cannot help the engine cool down?
  19. L

    a boat

    You are right. I will not buy it without run it in the water. I think the oil will be milky after it running in the water if block is cracked
  20. L

    1989 Mercruiser 2.5L 120HP motor overheating trouble shooting

    rebuild my engine? big job for me. I am checking one boat with 130,125,120,120 PSI, seen my another thread.
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