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    Test run a Mercruiser 3.0 ltr 86 model in the garage

    How much support the engine need for a test run in the garage to be safe? (Does it need to be bolted down to a pallet ore something) Any easy trick for start and stop, wiring switch? Minimum to not damage anything, and perform a safe stop of the engine. I would just use a multimeter for oil...
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    Mercruiser 3.0 What is the difference on the blocks?

    What is the difference on the engine block from 1986 to 1977? Engine no A567310 (1986) Engine no 4651215 (1977) approx I want to use the old block on the 1986 engine. Is there any change on the blocks after 1986?
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    3.0 Mercruiser, water in cylinder # 1

    Have searched but not found something similar. 1986 modell 140 HP Engine # A509730 Starting problem and found water in cylinder # 1 (First from front) Could this be cylinder head gasket? No water on dip stick Manifold and engine drained down for water. Compression is higher on this cylinder...
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    1999 Johnson 175 hp with hard knock

    This is a defect motor I might buy. How many types of 175 HP was it in 1999? Any known problem with this motor? Can this motor be re sleeved? How many years was this motor i production? Don't have the serial number yet. But supposed to be 1999 model Any tips are welcome, might be looking at...
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    1994 mariner 60 HP, power trim only work down

    Repaired trim motor yesterday, tested ok in the bench. Tested several times up and down. Today mounted on the boat, the power trim only working one way, down. (This was before the piston was connected to the outboard.) The trim motor is working...:confused:
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    1994 mariner 60 HP, change of trim motor

    Is it possible to change the trim motor, with the engine on the boat? Have one problem, relief (release) valve is damaged. Plastic screw :confused: Able to loosen the three bolts on each side. (But have to brake (damage) the motor casing at the filling screw to get one of the bolt out) But...
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