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    weird grounding issue

    This is true, hence DC (direct current) the current only flows one direction. From (+) to (-). This is why a power windlass can change direction by simply reversing polarity at the motor connections I think your setup is a bit cobbled and the attempt to switch the ground side is wrong. I've...
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    Volvo penta aq125a

    I would think opposite of this statement As rpm increase, vessel speed increases 600-700 idle in gear/minimum wake, 1100 rpm at earliest off minimum wake speeds
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    Alpha I Gen II Impeller Replacement

    Not uncommon to see loctite on the fwd most fastener between the halves, mainly for anti corrosion purposes The "seal" on top of the housing is a slinger in place to prevent water wicking up the driveshaft during operation. The new kit (hopefully oem) comes with it The guide piece has melted...
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    Volvo penta aq125a

    Most/all decent dvms sold these days have dwell capability. It's not reliable though because the signal is analog (slow/sweeping) and a dvm reads mainly peak voltages. The capacitor in the points system throws the dvm reading off There are a number of reasonably priced analog dwell meters...
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    weird grounding issue

    If you installed the switch on the negative/ground cable from the battery then my guess is the electrical system is finding ground through the hull and getting back to the battery (-) post via that route The battery is the main ground for the entire boat and engine 12 volt electrical system. By...
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    Bravo 3 loss of lube oil - slowly then rapidly x2

    The bearings/races don't need to be removed from the gear, just need to remove the gear/bearing pack assy from the yoke shaft along with the tapered washer, seal carrier, spacer, o ring, washer and nut You can gently rap on the gear end to unseat the bearing pack so upon reassembly the nut will...
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    6.2 MPI Whine noise when revs

    Regardless of last service that whine and apparent rattle in the video denotes something quite off First step is to remove the drive and inspect u joints and gimbal bearing. If okay I'd be suspect of low oil in the drive. Would think the problem will be obvious after inspecting these items
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    6.2 MPI Whine noise when revs

    When was the last time the drive was removed for service? Being louder outside the boat I'd be suspect of u joint/gimbal bearing issues FYI rapid throttle increase with quick return to idle with no load can lead to valvetrain issues
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    '88 5.7 inboard dies after running smooth, restarts after few minutes, smooth again

    Just leave the known good running engine setup alone aside from removing the connection to the synchro along with the in question tachometer. You only want to try one process at a time otherwise you lose track of what you've done I can't recall ever having an issue with the latest style oem...
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    Volvo penta aq125a

    Once you get the ignition system tuned proper the best method for setting idle air mix and speed is with a vacuum guage A mechanically sound engine should be able to have idle speed vacuum at a steady 17 in/hg at most elevations Not sure on your engine the best place to connect a vacuum guage...
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    Volvo penta aq125a

    I found this. For an AQ125B but I can't imagine it'd be much if at all different for the A series
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    '88 5.7 inboard dies after running smooth, restarts after few minutes, smooth again

    Being a slimmer, v shape means the module is of newer vintage than the large square one but wouldn't necessarily rule out failure. It's definitely the last portion of the ignition system that would fail ime Reading through your first post again and seeing the most recent one mentioning an...
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    '88 5.7 inboard dies after running smooth, restarts after few minutes, smooth again

    I'd say that hose is definitely for the coolant/af side of the system. Im guessing raw water enters/exits at the end caps on the exchanger The running issue most likely has to do with ignition. With an older (guessing tb4 with the large, square module mounted on the riser?) thunderbolt ignition...
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    06' 5.0 MPI intermittent fuel issue

    Agree with all posted advice. Based on which cool fuel module you actually have there's some difference in filter inspection Cool fuel module (bravo) is a stand alone fuel cell that has a basket type filter along with a screen element in the bottom. Both filters need replaced at service Cool...
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    Tethered Laynard not working

    I would think that boats/engines manufactured prior to whenever the law went into effect are grandfathered and whatever type of operator presence currently in place is considered effective/legal Not sure what state you reside in but would imagine law enforcement wouldn't be interested as much...
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    Bravo 3 loss of lube oil - slowly then rapidly x2

    With hand drawn pictures, artiststry included from oem
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    VP SX oil leak?

    Inspection of the trim system complete
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    Engine swap.

    But the manufacturer specs for the given application are moot? This a situation similar to rolling into a hot rod convention with a suped up cadillac. Yep, it's cool......for you
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    Bravo 3 loss of lube oil - slowly then rapidly x2

    Yes As stated it's outlined in the fsm Mercury actually knows how to repair their products with the proper parts and tools as described in their manuals
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    Stupid rookie mistake...

    Sealed is okay at any clock position. Don't forget to remove the grease zirc at the gimbal housing to aid future service Get some rest
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