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  1. B

    Engine noise identification

    I agree, rocker arm sounding , If motor performance is still good suspect a rocker arm loose,stud pulled etc. If performance is down suspect a stuck exaust valve,
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    Re-assemble Alpha One lower unit...

    with the control box in full fwd, the lower splined shaft turned fully CLOCKWISE for fwd gear.then lower the upper unit while turning the brass shoe clockwise and stopping when at a straight line.upper should drop down. Now the tricky part, slightly raise the upper start the 2 side nuts and...
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    2006 Tahoe Q4 4.3

    Another option is to use a 1 inch hole saw , drill down about an inch to start. Remove the wood around the lags and vise grip out the rest of the remains Option 2 is to drill the length of the lag,remove the wood and lag remains,obtain some oak railing /oak dowels.etc shape to size, insert with...
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    Copper water pipe used for

    a carb`d intake uses a crossover passage to warm the intake manifold. a TBI or MPI uses a tube from the stbd exaust manifold to do the same thing .It does not heat any water or have water flowing thru n it.
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    Apha 1 gen 1 can’t get reverse

    dont think the gen 1 shows the amount of swing in degrees.Anyway way you measure it the shoe must not go past 12:00 position
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    Apha 1 gen 1 can’t get reverse

    the bowed intermediate might be the start of the issue IF the lower was forced on incorrectly and bent the lower shift arm in the lower unit. If you split the drive did you check for/install/reinstall the SS washer that goes on the lower splined shaft first? With the drive off rotate the shoe...
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    Water inside the engine compartment

    land sinkings are more common than you want to believe, NEVER leave a transom plug in ,on land. batteries and pumps do malfunction
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    Water inside the engine compartment

    if I/O most definitely got into the bellow if inboard most likely got to the trans
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    2015 6.2

    more likely both of the manifolds lower section are clogged drain the manifolds and drill a 3/16 hole thru the coreplug,use a flat screwdriver to flip sideways and a awl or small phillips and remove the coreplug Almost sure it will be plugged up new plugs come 6 toa pack for about $12.00...
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    Mecruiser 4.3 MPI Carbon Issue

    Once identified they can be sent out for cleaning , and if you have "cool fuel III" remove the water drain occasionally to prevent it from clogging and causing run ability issues with the MPI fuel injection
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    4.3L Thunderbolt V Ignition

    must not be in a hurry .pm` saying I have a 5.7 Alpha ecm
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    Marine grade fan belts vs auto parts store?

    mercruiser gets their belts from the same place auto stores get theirs. Mis-alignment, over tightening are the main causes of belt malfunctions
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    mercruiser 7.4mpi has sudden loss of rpm-out of ideas

    fuel pressure might be ok but what about fuel column? put a laser on the fuel temp. just got in a CFIII unit that a shop replaced and the only thing that was the reason was that the cooling system for the pump was clogged up with sand and debris
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    cool fuel III interesting problem

    the drain plug and the hoses are visible
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    cool fuel III interesting problem

    Got my hands on a unit that a shop had replaced because of a fuel problem. The unit was not cooling the fuel leading to some issues, running ,vapor lock, etc. Shop replaced the cool fuel unit to restore service to the customer. I got it wanting to dissect it to see how it worked, What I found...
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    Alpha one gen 2 tapping at hard turning angle

    If you operate at full trailer trim they will make noise even at idle.that why it has a limit switch
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    Mercruser outdrive

    When removing the trim cylinders DO NOT PUT A HAMMER ON THE PINS Go buy a pitman arm puller, do a slight grinding mod to the legs and remove it that way
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    1990 4.3 mercruiser - power steering leak at cooler.

    You can do that If your removing the drive, getting up to temp to flush the engine and then remove the manifold and block drains, With the drive off you can use a shop vac on blow or just blow air into the hose to force the water out the stern
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    80's Mercruiser 3.0L with obsolete distributor cap

    Kg ,I have seen that v8 dist application on a 470 motor works just fine
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    exhaust coversion

    you would need to pull the engine, remove and cap the exaust Y pipe. Then cut 3 or 4 inch holes at /near/below the water line (you need so seal the raw wood also)and connect with exaust hose and a 90 deg elbow and 2 clamps per each side of the hose connections And if your looking for added sound...
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