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    Bad 1970 Mercruiser Engine, Please tell me there is still hope.

    What condition is the transom in ?-----How about stringers under the floor ?------Engine repairs are easy in comparison.-----An inline 6 should not be hard to find.
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    Overweight motor

    Perhaps went from a 200 lb motor to a 350 lb motor.
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    Unable to start and no water out the telltale

    Did the carburetor cleaning on one of those a few weeks ago.-----Slow speed needle was about 5 turns out.-----Motor started on the first pull.-----Then adjusted for proper idle after that ( 1 turn ? out )
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    OMC 115 Turbojet Bad Piston Replacement Help Needed!

    These jets boats were marketed for about 4 years.----As is typical everybody that wanted or had one got tired of them.-----Production numbers dropped after those first years.-----Many of the Turbo Jets suffered broken rings.----Might have to do with the nature of operation of jet...
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    Johnson trim/lift assist cylinder

    Locks in place.-----Not considered repairable.
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    77 evinrude 55 hp oil leak

    It is not the grease you put in the fittings !!-----There is a post on here almost every week asking about this sludge.----Very normal for a 2 stroke engine running in a barrel.-----Pressure test your gearcase to look for leaks if there are any.
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    Fuel Problem

    A compression test checks piston , ring , cylinder and head gasket condition.-----A compression test in the cylinder has noting to do with crankcase compression , reed valves and crankcase gaskets.
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    1978 Chrysler 85HP Powerhead Swap

    Yes , I read that you did.-----However someone else suggested oil on these tapers !
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    OMC 115 Turbojet Bad Piston Replacement Help Needed!

    Well----I removed an engine from one of these a few years ago.----Broken piston rings !-----You guessed it , the adapter has to come out with engine on it.
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    1978 Chrysler 85HP Powerhead Swap

    Putting oil on the flywheel and crank tapers is a mistake / blunder !-----They are to be assembled clean and dry.
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    Gas Issues

    The air above the river / lake has more water in it than air above your driveway 10 miles from the lake.-----So if boat is kept at a dock ( more condensation in the tank ) you need a good water separating filter.
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    OMC 115 Turbojet Bad Piston Replacement Help Needed!

    You need 4 new pistons.----At least 1 cylinder bored.------Pick some new pistons that do not have the wild taper ( design mistake ) on the top ring.
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    OMC 115 Turbojet Bad Piston Replacement Help Needed!

    There you go.----A most common failure.----Pull the motor out !
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    1991 Johnson 60 HP not getting spark?

    These motors are not hard to start if in good condition.----Perhaps post compression test numbers too.----If the safety lanyard is not installed correctly there will be no spark.-----Owners manual may be in your future.-----If this is your first boat perhaps have a shop or friend coach you on...
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    1991 Johnson 60 HP not getting spark?

    How did this motor run for you last season ?
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    1991 Johnson 60 HP not getting spark?

    ??------The control box is the thingy with the throttle lever up by the steering wheel.----Or is this a tiller motor ?----If it is a tiller motor it should have a kill switch lanyard on the steering handle.
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    1985 Evinrude 25 Starter Wiring

    It is not a ground for the solenoid !----What is your motor doing or not doing.----I am well aware that 12 volts , simple circuits and wires can be really confusing to some.----So tell us what is happening !
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    1991 Johnson 60 HP not getting spark?

    Little steps to take ---Understand that 12 volts from the battery has nothing to do with the spark.----Spark is made with a " fast spinning " flywheel.
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    1991 Johnson 60 HP not getting spark?

    First thing I would do is take the starter apart for inspection !-----Not good to hit those starters with a hard object.
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