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    4.3 LX water in the oil...

    Those heads are toast. Might get lucky with a reman but based on pics it's doubtful No clue where the water is coming from but a cracked head wouldn't surprise me along with manifold/riser issues
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    Engine swap.

    6.2 L won't have the low end torque the current 454 (if the sticker is accurate) has Mariah makes heavy, solid hulls. You'll only note a positive difference with more displacement. 496 might improve performance but imo that'd be a downgrade in engine compared to a 454. If you have the...
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    5.0 GXi…

    Check the relay/12 volt supply and verify good ground for the pump and relay connection
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    Stumbling at Cruising Speed - OMC 5.8L

    If you ran the engine as it's pictured and noted cold water exiting the large barb hole for the circulating pump hose that's normal You're seeing the raw water supply from the pump in the drive. Thermostat controls water flow exiting the engine block and would only release hot water to exit via...
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    Fuel return

    Possibly the fuel vent line. Can you see where it is attached at the other end? If it is the vent line you'll want that routed proper so as to alleviate the risk of fuel vapors/raw fuel entering the bilge
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    No water pressure sink faucet

    The aerator/screen filter at the faucet head could be plugged. Remove and inspect
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    Mercruiser MC-1: is this play acceptable?

    Side to side looks normal for an almost 50 year old steering system Up and down is concerning. Check the lower swivel pin at the gimbal ring, needs to be very little/zero slop between the pin, gimbal housing and bearing in the ring. Bearing and pin are both replaceable. Gimbal housing is not...
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    1976 888 Fuel Questions

    The muffs pictured are the style recommended for bravo drives. They work on some alpha style and other manufacturers drives but in your case the diverter/intake inserts don't allow for the rod to pass through When I mentioned the round style I meant the clamp style like you have but with the...
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    Sea Water Pump Cover - Question

    The pump shaft/bearing housing should have five threaded holes for the bolts securing the plastic impeller housing. Often one or two bolts will not extend beyond the shaft/bearing housing because the bracket that mounts the pump to the engine does not have holes drilled for them. There should be...
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    No clearance between starter bolt and flywheel housing on 4.3L 175hp

    A flare wrench may work, otherwise you may have to remove the inspection plate from the flywheel cover
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    Bravo 3 loss of lube oil - slowly then rapidly x2

    At this point you need to remove the drive from the bell housing and pressure test it separate from the lube monitor system Check to make sure the o ring is seated properly in place at the lube monitor valve in the bell housing once the drive is removed
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    Hull ID #

    If the boat was manufactured prior to 1972 it may not have a hull ID number The tag pictured appears to be for engine/driveline info
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    Green people destroyed another fantastic fishing area.

    I'm curious as to how balanced the river ecosystem was prior to septic system daylighting into riparian areas. Void of life? A sound septic system ought to be fine when daylighted towards a lake/river. Its when age and damage allow for excess leaking there's an issue. Most prevalent is algae...
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    Ford 302 issues

    Have you determined the alternator is continuously outputting a steady charge to the battery? An ammeter on the dash is okay to check output but it doesn't give you a solid number. Volt guage at least gives a finer "tuned" number but the true test is a dvm on battery posts with engine running...
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    De-winterizing Mercruiser 5.0 mpi with heat exchange

    With the fresh water system tank full and the fresh water pump turned on the water heater will fill via the cold/blue fresh water line attached to the water heater. Opening a hot faucet, preferably the furthest one away from the water heater will allow the water heater to purge the air inside it...
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    1991 Monterey W/Merc 3.0 Questions

    You can replace the trim fluid reservoir, be sure to get new o rings too Start by checking the impeller for missing/broken vanes. If intact the rubber bits are from elsewhere, wag is crumbling interior of exhaust boot If the circulating water pump pulley is wobbling its either loose or the...
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    One of the studs on the sterndrive is angled too much when I rethreaded it, so it's not aligning properly with the transom mount.

    You'll probably break the bell housing trying to heat and bend the stud with it installed Remove the stud, clean out/straighten the threads in the bell housing and reinstall the stud straight. If you can't get it you may need to go bigger with the hole and install a helicoil
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    Alpha No Trim Limit Switch Connectors

    The limit switch wire ends are two male bullet ends that connect to the trim wiring harness normally located near the pump itself Oem wiring would not have it routed through the main engine harness
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    1991 Monterey W/Merc 3.0 Questions

    Guessing this is an alpha sterndrive Trim fluid reservoir (later model oildyne) attaches to the pump with a screw in the middle. Not uncommon to see the reservoir crack/break Rubber bits in the exhaust could be impeller pieces but also parts of flapper, hoses, exhaust boots, etc.. Best way to...
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    Flooring Repair/Rejuvenation

    Your friend's boat is constructed differently than yours. The gel coat deck is part of the top cap/top half of the boat Your plywood floor is part of the hull There is no feasible, affordable way for you to install a solid, decent looking gel coat deck If you want a gel coat deck buy a boat...
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