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    Engine Dies When Hot

    normally located on the plastic cover over the flame arrestor, i've often seen the number(s) missing from that location mercruiser oem engines have a metal tag with serial # stamped in it riveted to the block just above the starter (stbd side aft on a gm sterndrive) lucky for you there is a...
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    Oil leaking - shift cable

    remove the top cap and rear cover on the upper driveshaft housing, this allows access to the shift linkage cavity and the shift shaft seal located where the shaft enters the gear/clutch cavity above the shift linkage fwiw i've never seen a shift shaft seal fail in that location given the...
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    Preignition knock under a load 2000 Thunderbolt 5

    check the total timing advance, should reach total between 2000-3000 rpm. not sure which engine you have but total should not be more than roughly 32 degrees for a sbc if total advance is okay you most likely have lean issue, check fuel pump pressure throughout rpm range, also may be time to...
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    Guardian mode activation with no explanation from gauge

    a computer with the proper software will be able to look up freeze frame fault codes and tell you what the issue is/was, otherwise is just speculation
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    Oil leaking - shift cable

    could be a mixture of water, gear lube and grease. there is a seal at the rear of the shift linkage cavity that may be leaking gear oil have seen the same issue before and determined that there was too much build up in the shouldered o-ring recess for it to seal properly. fyi your anodes are shot
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    mercruiser 4.3 alpha 1 gen 2 shift issue

    if you are certain the lower shift cable is adjusted properly, 6" between centers fully locked in FWD gear then the issue may be you need to adjust the remote cable
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    Alpha 1 Gen 2 upper gear preload

    OEM seal is not double lipped, its design allows for air to pass through when the drive cools which is why a vacuum test will fail on a fully assembled drive
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    New Long Block, Cranks and Won't Start

    sounds like you got the distributor installed correctly, keep in mind exhaust stroke will produce a bit of compression but should be noticeably different on the compression stroke wet plugs indicate too much fuel/flooded, you can try cranking the engine with the throttle at WOT to clear the flood
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    New Long Block, Cranks and Won't Start

    -verify distributor is at #1 tdc compression (might be 180 off) -verify firing order is correct -verify good spark with a spark tester
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    Alpha 1 Gen 2 upper gear preload

    you are correct in holding the bearing races stationary while checking rolling torque, having that high a reading without the nut even tightened indicates something is likely installed wrong/backwards verify that you've assembled everything correctly and check again
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    2004 Crownline 4.3- No power to Key but power to accessories.

    you mentioned checking the 50 amp breaker, is there power on both sides? ive seen them fail even though they aren't tripped often there is a 20 amp ignition fuse at the panel
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    Mercruiser 4.3 Repower Engine Mount Question

    will likely be okay as long as you are installing lags into solid material but if it were my rig i'd like to see at least an inch of flat area to the inboard of the mount
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    2004 Crownline 4.3- No power to Key but power to accessories.

    operator presence (lanyard) switch at remote
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    Help with charging system?

    right, got em mixed up. red senses battery voltage (from red/pur lead) purple (ignition) is the excite not sure if someone just installed a black wire in place of the purple on your alternator but swapping shouldn't hurt anything for testing purposes 24 volts from B+ but nothing at battery...
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    5 liter Mercruiser wont Idle

    mpi engine, is likely the IAC even without any fault codes. it is a common failing item and your symptom fits the description of one kind of IAC failure only way to know for sure is by using a computer with proper software to identify any fault codes and looking at data items, specifically IAC...
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    5 liter Mercruiser wont Idle

    is carb or efi? if efi, yes possible the IAC is faulty but could use some more info
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    Help with charging system?

    purple is sense, red is excite voltages with key on should reflect what you are seeing, if your engine is equipped with points, the purple wire should be resisted, hence the difference in voltages. engine running voltages should be roughly 2 volts higher than static (non running) on each wire...
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    Alpha 1 Gen 2 upper gear preload

    did you clean the seal surface of the yoke and grease the seal lip? preload is measured with a light amount of gear lube in the bearings as well
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    wont shift out of reverse mystery issue

    have you verified the v-notch is properly contacting the switch when shifting out of gear? sometimes it will work one way and hang up the other way, issues could be misadjusted switch (yes, there is a slight adjustment you can do), worn v-spring, or misadjusted lower/remote cable. sometimes the...
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    What is being aligned, the engine, or the bearing, or both? And why?

    no, you are not informed correctly or you are misunderstanding the given information the outside portion of the bearing assy is press fit into the shouldered portion of the gimbal housing. it cannot move in any direction once installed the center portion or inner race is the part of the...
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