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    Marine Engine Depot

    Pretty sure diacom with the most recent update will communicate with mefi 7. Can verify later I think marine power engines have used mefi 6&7 in recent years
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    Close on the formula

    Good to know. It does have a mechanical pump with the sight glass on the side, no tygon hose to the carb It is a 12 bolt intake so yep, non vortec. I'm guessing this long block assembly vintage is in between the og 2 piece rms and vortec? 260 crank horsepower? It does scoot on step I will...
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    Removing trim senders screws

    Ime with a stuck sender mounting screw one will come out easy and the other will break off I've had some success by backing out a stuck screw a half a turn then re tightening it multiple times. Kinda slow but works 50/50 No worries on a broken screw, just drill and tap a new hole like others...
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    help, new fuel pumps and pressure still below specs 2004 5.7 MPI

    Thanks for the write up FT. Nice explanation Not seeing in person what setup/testing procedures is a damper. I was thinking with the vacuum line blocked the regulator is now out of the system essentially thus the pump ought to be unlimited for pressure, like 60 + psi. Sounds as though the...
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    Needle in a haystack

    I'm nowhere near upstate NY but if it came into my shop I'd at least take a look at it, no promises on repair though Good luck
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    Blue sea circuit breaker help

    With the engine running at around 1000 rpm the alternator should be providing near to 14.5 volts (+) to the batteries. If not there is an issue with the alternator or the associated curcuit
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    help, new fuel pumps and pressure still below specs 2004 5.7 MPI

    Looking on epc with serial number it shows the cool fuel 3 system that has a regulator return fuel line to the water sep housing There also is a vacuum reference line from the intake manifold to the regulator. If the system is connected and sound should not the fuel pressure read well above...
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    Mercruiser 4.3 Alpha One problem - loses power

    You could most likely find here in iboats ships store
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    Close on the formula

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    Mercruiser 4.3 Alpha One problem - loses power

    You may find an oem fuel line new, maybe Sierra sells a flexible pressure rated fuel line in 2 lengths that has the correct ends/connections in place. Plug n play
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    Stupid Question from New Member

    I was thinking this as well. One other thought I had was a renault engine? Dunno when merc stopped using them A picture or five would help
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    Close on the formula

    Will this long block have a 14" flywheel w/ one piece rms?
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    Close on the formula

    Post #23 shows an exhaust manifold that has suffered a crack. What was the cause of this crack?
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    Close on the formula

    upgrayyyed!!!
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    Close on the formula

    I wanna visit the store where one can acquire this mcm package complete for $500
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    Close on the formula

    this is kinda funny to see on an mcm
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    Close on the formula

    guessing the cause of this was the reason for the long block r and r
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    Close on the formula

    definitely not vintage to the boat, replaced at one time prior to current ownership its a labor of love that keeps me outta trouble
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    Close on the formula

    the block has casted 880 between the welch plugs on stbd side. also the casting number above the flywheel ends with 880
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    Close on the formula

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