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    Mercrsuiser 185HP, Unkown Serial No.

    There is some leaking oil. But I do not know where it is from. Can somebody help me identify this issue? The engine oil is clean and good. I am sure the engine oil is the not same as this leaking oil. There is some oil in the second pic. Is it possible leaking from here? Also What kind of...
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    Mercrsuiser 185HP, Unkown Serial No.

    So I will follow 3'' exhaust sytem. and the water shutter part No. should be 99370A2 https://www.mercruiserparts.com/bam/subassembly/31468/919/220 Thank you
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    Mercrsuiser 185HP, Unkown Serial No.

    Attached file is my elbow, top end is 4'' and bottom end is 3'', Should I follow 3'' Exhaust System or 4'' Exhaust System? Also Can following link from Amazon is cheaper and Can it fit my engine...
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    Mercrsuiser 185HP, Unkown Serial No.

    Should I replace the water shutter assembly?
  5. L

    Mercrsuiser 185HP, Unkown Serial No.

    Should I also replace the part of water shutter assembly. I can take it off. So I am concerned that it was damaged too
  6. L

    Mercrsuiser 185HP, Unkown Serial No.

    The upper diameter is 4 inches, the lower diameter is 3 inches.
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    Mercrsuiser 185HP, Unkown Serial No.

    Today I damaged the exhaust tube and bellows because of the lack of water. But the cylinders' pressure are still good. They are 140,140,140,130,130,140. How can I know the exhaust tube part No. and exhaust bellow Part No.? I have noticed the tube Part No. is 32-90949-001
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    My boat run slowly. 120HP,2.5L,1989

    I think the reason of my motor shut off in the lake was shortage of the battery's power.
  9. L

    My boat run slowly. 120HP,2.5L,1989

    I got 14.30 when motor is running at the speed of 1500rpm and even idle, it should be ok
  10. L

    My boat run slowly. 120HP,2.5L,1989

    It seems that battery's short for the power. I can start the motor after I charged for 3 hours. Is it possible the alternator was bad? How can I check if the alternator is good or not?
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    My boat run slowly. 120HP,2.5L,1989

    I pulled my boat into lake this morning and run the motor with gas mixed with the sea form about 20m. Then the boat can run with 33 miles. But later it shut off and failed to get fired. So I got back my my trolling. I checked the third cylinder's pressure is still 100. Battert's voltage is...
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    shift issue and running with some noise from lower unit gear

    I have two mercruiser, I have given up the one that the third cylinder compressure is low. Now I continue working on the new boat which cylinders are good in compressures. Current the new boat does not have the issue of bellows. I will leave it if it is not necessary. Thank you
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    shift issue and running with some noise from lower unit gear

    Help me please
  14. L

    shift issue and running with some noise from lower unit gear

    It is difficult to pull it out. How can I fix it?
  15. L

    shift issue and running with some noise from lower unit gear

    Today I found the wire of the part is broken. Should I fix it? But it work as even the wire is broken
  16. L

    shift issue and running with some noise from lower unit gear

    Today I push a lot of greese through this hole, but I did not any greese. Was the greese push into gimbal bearing?
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    My boat run slowly. 120HP,2.5L,1989

    Could I do a cleaning for the carburator? I have bought a can of Sea Foam
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    My boat run slowly. 120HP,2.5L,1989

    Dangerous action. I prefer not trying doing so
  19. L

    My boat run slowly. 120HP,2.5L,1989

    What kind of product do you suggest to apply?
  20. L

    My boat run slowly. 120HP,2.5L,1989

    Hi Scott, should I drop the Yamaha combustion chamber cleaner into the cylinders through the spark plug hole? Will it damage my engine?
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