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  1. D

    Water in Oil

    good you drain . I boat in upstate NY (finger lakes). Im always amazed how many folks up there just run the cheapest AF through a bucket and muffs... pressure test and if it fails pull the thermostat and look under there before you get worried. If raw water it isn't uncommon long term for the...
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    Water in Oil

    I would do the pressure test of the block /heads and intake to vet if its cracked. If you are raw water cooled could be rotted out under the thermostat or intake gaskets leaking around water port as well. If it is coming out the dipstick that means you are adding a lot of water to the crank case...
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    Are my props causing all my problems?

    x2 on checking advance is coming in
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    Are my props causing all my problems?

    i would blame the vibrations on the props, but the rest of it sound like tune up and run ability issues. Since it got hot do you still have good compression and ruled out a head gasket? I would check the compression, look over ignition components including checking timing and consider a carb...
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    Mando regulator differences ?

    might be an obsolete part they are trying to close out as yes normally the Sierra/Oem price is sierra half of OEM...
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    What Generation Alpha

    that was for the OP wasn't sure if he knew that feature is on the site.
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    What Generation Alpha

    ok as long as you know it is there. In the past I have had to ask ME for kit info. I think when I ordered my bellows kit it wasn't laid out in the parts diagram either
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    Mer cruser

    no the iron duke is a pontiac engine (151 CID) that was built in 1980s where the mercruiser 3.0 and earlier 2.5 are chevy based- from the 153 cid engine that came out in the 1962 Chevy II (Later Nova). Later the engine was expanded in displacement to 181 CID/3.0 which was an industrial /marine...
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    What Generation Alpha

    our host here has a search by serial for merc drives and engines - https://www.marineengine.com/parts/mercruiser-stern-drive/index.php that ensures you will get the right parts for your application. They usually have both aftermarket and OEM options. Typically getting OEM impellers is worth...
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    Bravo 3 stern drive 5.7 engine. Boat leaking through the arm that connects to the gimbal ring that passes through the transom.

    Agreed but depends on the boat. My buddies 28 ft bayliner saved him a lot of work to not pull the engine. In my 21 ft bow rider its way easier to pull the engine. If you read his first post he mentioned JR marine and wasn't sure what it was about, just providing options.
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    Bravo 3 stern drive 5.7 engine. Boat leaking through the arm that connects to the gimbal ring that passes through the transom.

    JR makes a kit (merc does as well) so you can pull the pin and gimbal ring to replace the seal without pulling the engine. If you engine is a bitch to pull this makes sense to save some time. JR also can repair gimbal rings and bell housings that get worn https://www.jrmarine.com/instructions.htm
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    4.3 MPI Not Starting - Starter solenoid click

    might be better to start your own thread and tell us what you are working on. Did you check both positive and negative battery connections and connection at cannon plug from helm harness to engine harness ?
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    Bad compression test on 4 & 6 cylinders

    as others have written 90 psi is considered a dead cylinder(s). So from buyers perspective this means they will have to put a new engine in. Some fixes for this aren't terrible cost wise- two adjacent cylinders have low compression is often a blown head gasket. Can also be from hung up or...
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    Electric fuel pump questions - 4.3 L mercruiser-1990 V6- 2 barrel carb

    in additon to the 10 pin plug and batt cable check for voltage drop at the helm as well. what i have seen on two of my boats is the power comes from the key and daisy chains through all the gauges in series, lots of connections that can get corroded or loose. To me this is a bad design vs...
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    Mercruiser 120 Help with wiring the ignition coil (and distributor, possible upgrade to electronic ignition)

    same here my tach died but the dwell still works. Same with the timing light I bought back in 1990. My dad was cleaning his garage out and gave me his tach and dwell he bought in the 60's still works. to the OP - find an older guy who is a shade tree mechanic. bet he would lend you a dwell...
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    5.0 MPI manifold t-drain failure

    this may have come apart from freeze damage. If you put it away last fall and it was working fine, then in spring it popped apart I would wonder if the system was fully drained
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    Mercruiser 120 Help with wiring the ignition coil (and distributor, possible upgrade to electronic ignition)

    Years back I ended up going to a single wire alternator on my grandfathers 1966 straight 6. Just hooked up the red wire and tapped off the other two, disconnected the external voltage regulator. Worked for years
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    Mercruiser 120 Help with wiring the ignition coil (and distributor, possible upgrade to electronic ignition)

    if he ran another wire did the PO do a Points to electronic conversion like pertronix ? This would require 12 v at the coil vs the reduced 9 -10 v
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    2010 Mercruiser 350 Mag MPI crank not start.

    try michigan motorz for a reman long block $3800 or new base engine $5500. Might be worth a leakdown test may get away with a valve job. Sounds like despite what the seller told you he knew the engine was roached. You seem handy swapping long blocks is not that much work. Cheapest option could...
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    Cant push stern drive in all the way... HELP

    michigan motorz is a good place for new and reman 5.7s New base engines are $5500, reman is $3650. Both have a $300 or $500 core charge which you wont get all of. When I bought a new base engine they bought my cracked 4.3 for $150 and pd the fright back to them. if you are handy you can get a...
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