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    Need RPM’s on 383MPI 1970 SeaRay 24’ project

    Possibly, mercruiser has used smartcraft/vesselview for the better part of 20 years. It should at least indicate a fault but may or may not give detailed information depending on the model/style/age of the vesselview. You have an ecm that is mapped/programmed for a stock 5.7/350 on a 6.3/383...
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    Click No Start

    Picture in post #7 shows the yel/red wire connected to the wrong primary post at the starter solenoid Yel/red needs attached to the inside (closer to block) post
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    MEFI 3 diacom capabilities

    Possible but not probable to test for spark with diagnostic equipment on a mercury mefi system. Capabilities are quite limited as the original DDT was used for onboard diagnostics when the engine was new The ignition sensor is used for the mefi ecm to read engine rpm as well as control...
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    454 7.4L mystery fasteners on back of engine block

    Rear engine mount bolt Yes, due to the spacer If it's tight, it's tight You should tie the sender wires out of the way as not to interfere with the steering actuator nor rub on the coupler
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    Alpha 1 Gen 2 Drive Shaft Housing, Lower oil seal replacement?

    Originally the lower driveshaft housing used two individual seals back to back. Updated part is a single double seal installed from the top requiring disassemble of the driveshaft housing components If you intend to reseal the entire housing you'll need a yoke/input shaft seal and o ring, a new...
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    Alpha One Gen 2 prop shaft seal replacement

    You have to pull the carrier Long jaw puller, add heat on sides to aid in removal
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    Mercruisier 7.4 litre gas pressure

    That is a regulator that is crimped/stamped in place at the aft end of the fuel rail. Mercruiser calls it a damper which lessens the feedback pressure in the fuel system from the injectors pulsing and is not used for pressure regulation It's a GM part that is non serviceable and AFAIK is NLA...
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    Ghost Lube Drive Oil Low alarm...

    Correct, with the wires disconnected from the bottle the alarm should not sound. Seeing as the bottle/switch is new that can be ruled out as a culprit The switch in the bottle completes the audio warning system circuit to ground when the lube level drops too far. My guess is a chaffed wire...
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    Melted coil feed wire = Bad Pertronix?

    A melted wire would indicate a short to ground, my first guess would be the choke. Otherwise the bypass wire as part of the original system could be an issue. Not too sure where the bypass wire is connected but on some its from the primary side of the slave solenoid or the excite circuit from...
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    Alpha Gen 2 Shift Cable Removal

    Like others say try heating the area around the insert and unthreading it with an appropriate socket If you can't remove it conventionally you may have to drill it out and run a tap through the hole You'll need a 1/4-18 NPS tap that requires a 7/16" pilot hole It'd be best to start with a...
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    5.7 hard start

    Would also add that on mercruiser fuel systems the regulator does not allow fuel to return to the tank. The line returns fuel to the water separator housing Boats that have a fuel pump in the tank (mainly ski/surf/wake boats) return fuel to the tank. Mercruiser has never used an in tank pump...
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    2005 Mercruiser 350 Mag Bravo III Dual prop - hesitation

    Could be the clutch, or as mentioned gear lube Could also be worn/mis adjusted shift cable(s)
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    Audio warning system on 2003 Mercruiser 5.0

    Could be knock module/system, if equipped
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    1988 Mercruiser 5.7 timing issue.

    Gonna need a timeline here starting with the upgrade long block from 305 to 350 Impossible to not touch a distributor with this procedure
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    1988 Mercruiser 5.7 timing issue.

    That's correct for a LH rotation sbc. Is this a sterndrive or inboard engine? Did the engine run before install? Did you replace the long block?
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    1988 Mercruiser 5.7 timing issue.

    What firing order are you using? Checking timing at #1 cylinder?
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    Steering pin replacement

    Torquing the u bolt/through bolts/nuts is part of routine maintenance. 55 lb/ft iirc Once slop is noticed between the steering shaft and gimbal ring its a bit too late. You can tighten the nut/bolt assy but don't go beyond the torque spec as you can break the bolts If it tightens up the slop...
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    2004 Mercruiser 3.0 Aplha One won’t start

    Did you follow any advice posted in the other thread you started regarding the same issue? Have you verified good spark?
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    2 Mercruiser-1's stuck in same way

    2x4 sideways in front of the drivshaft housing cap Lift the drive upwards to wedge the 2x4 between the top cap and gimbal ring. That ought to force the drive off
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    2004 Mercruiser 3.0 Aplha One won’t start

    Agree with adodge, need to check over connections/voltages with a meter. Start at the battery and work your way to the distributor including grounds
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