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    1980 3.0L strange overheat issue

    Based on the amount of debris in the inlet filter I'd be suspect of contamination/debris in the fuel tank/failing filter(s)
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    carburetor suspect problems

    Is the ignition system a thunderbolt or conventional (points)?
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    thunderbolt ignition wiring diagram

    If you purchased an oem (quicksilver brand) ignition sensor it comes with proper/necessary parts and detailed instructions on how to install/connect the sensor I'm guessing you purchased an aftermarket sensor?
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    thunderbolt ignition wiring diagram

    Oem ignition sensor kit will have proper connectors to attach new style sensor leads to the ring terminal ends for the module/shift interrupt switch. Ground lead goes to the block stud for main battery ground located at the flywheel cover Installing anything aside from oem ignition sensor is a...
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    350 MAG temp issue

    Squeeze grey tab and pull hose end off of block drain fitting. Water should stream out with decent pressure at first. Lessening as the water level in block decreases If no water is initially present upon hose removal, probe the drain fitting with a stiff wire. A short, bent piece of a coat...
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    Volvo Penta 5.0FIPNCSCE SLOW mode

    My post #29 about a PM was meant tongue in cheek as reference to your post #24 which is so vague it makes very little sense Sorry for the confusion
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    Very hard to steer towards starboard while underway

    Agree with fun times and will add that a rotary style helm for a sterndrive is not the preferred setup. If indeed there is a rotary helm/cable it would be in your best interest to upgrade to rack/pinion
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    MR-1 U Joint Bellows Leak

    Running the boat won't have any more effect on damage as just sitting static without a clamp in place Bellows adhesive is used as much as an aid in installation and corrosion prevention as it is for actual adhesion. The clamp provides a majority of the sealing/attaching of the bellows If...
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    NO SPARK!!!! Thunderbolt IV headscratcher

    What brand ignition sensor did you install? Anything aside from oem would be suspect ime
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    Penta 275 outdrive prop ate the rope couple screws snapped

    In essence, science The anode is present to enhance catalytic corrosion upon itself. It's sacrificial as in it deteriorates sooner than the drive itself. The anode's inherent design is to corrode. Fresh water use only requires magnesium anodes, salt water requires zinc. If you're 50/50...
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    2010 350 Mag MPI bravo 3 gaurdian mode issue. 5% power

    If you want outboard diagnostic equipment you must have the proprietary equipment for each manufacturer. This is a sterndrive forum. Outboard diagnostic equipment questions should be posted in an outboard related forum. I only have access to g3 for outboard diagnostic equipment. If you're...
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    Manuals and parts diagrams for VP outdrives

    volvopentastore ought to have exploded views for parts schematics The website has a massive (like really massive) amount of information and requires much patience during load times. Depending on amount of user access to the site operation/load times can vary. The information on the site is...
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    2010 350 Mag MPI bravo 3 gaurdian mode issue. 5% power

    G3 is Mercury's proprietary diagnostic software and not available to the public. You must be a dealer associated with mercury/mercruiser to purchase/use g3 Diacom is a separate company that markets a diagnostic software tool(s) that communicate with a wide range of inboard efi engines My...
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    2010 350 Mag MPI bravo 3 gaurdian mode issue. 5% power

    DTS = digital throttle and shift. The remote is electronic and sends a signal to servos located on the engine package to actuate the shift mechanism and throttle plate assy You most likely need g3 or diacom diagnostic software to properly diagnose any issues at this point Being a saltwater...
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    Gauge Identification / Testing / Replacement

    Standard is 30-240 ohm for boat gauges The circuitry and gauge can be tested by grounding/applying 12 (+) volts to the sender wire end at the sender (disconnected). With key on engine not running the gauge should spike full max with ground applied and full min with 12 (+) volts applied If this...
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    Inboard/ I/O Engine Hoist Ideas?

    I would locate a portable gantry. Can be disassembled for transport and fit in an 8' pickup bed and assembled to remove the engine I have a friend that sneaks his grandkids wooden swingset off their property to use as a gantry. Not the safest but it works until the kiddos notice their playset...
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    Continuous alarm and 30 second shutdown (plus)

    Not exactly. The engine ceases operation by disconnecting the primary side of the ignition circuit via the key switch The electric fuel pump is first powered through the starting system with voltage applied to the pump (+) lead from the starter solenoid. Once the engine is running and the key...
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    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    See?! Iboats has a wealth of useful information provided by its users Here I've thought the cranks were the same, they are not Find yourself a decent 302. It's a solid v8 that should provide years of good use
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    1998 Mercruiser 3.0LX Delco EST Ignition Cannot Enter or Exit Base Timing Mode

    If the ignition only runs at idle with the timing at 20-25 degrees btdc then the issue is either the firing order is incorrect, the tune up components are of an incorrect/inferior quality, the fuel supply has an issue or the engine mechanical system is faulty Funny story, had a 350 sbc rebuild...
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    Continuous alarm and 30 second shutdown (plus)

    One next to distributor is the oil pressure switch for the audio warning system. The two wire switch near the oil filter connection is to power the electric fuel pump
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