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    Mercruiser 5.0 MPI Catalyst - No issues

    yea the 5.0 mph went from 3 alarms, oil pressure, temperature and gear lube to 43 alarms.... Again no issues recently. If engine ever failed, I go back with carburated 350. The only benefit of catalyst is the catalyst manifolds will last as long or longer than engine. They are smooth, no...
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    Mercruiser 5.0 MPI Catalyst - No issues

    Just posting my sensor laden Mercruiser catalyst control 5.0 MPI has had zero issues in 200 hours over three years. Usually sits 6 months in winter. Only issue prior to that was failed post Cat o2 sensors. They were removed along with catalyst and a simulator installed. Outdrive water pump...
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    MerCruiser update

    Couple time a year when flushing on garden hose I will open the single drain valve with engine running. It blows the water into the bilge and out the drain. I keep it open for 15 seconds.... Never had issues with blocked drains doing it this way. I usually drain my block at 10:00pm at night...
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    shift cable thread insert repair

    Very Very Very nice!!!!! Thanks for sharking!
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    New (2020) Alpha One Gen 2 wont come off

    there is nothing wrong with the pics you posted. I would check engine alignment. If it is out it will make difficult to remove the drive. Drive should all but fall away from gimbal when the 6 nuts are removed.
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    Replacement Oil Filters

    Kind of related. I have Yamaha wave runners. Yamaha wanted $22.99 for one oil filter. The filter is identicle to the filter for my lexus gs300 which I get 3 for $10.00. Identicle part number, identicle shell, only difference is one says Toyota and one says Yamaha. Unbelievable.....
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    2007 350 mag power steering stiff

    alldodge is correct. once i lubed mine easy as can be. I removed the inner cable from outer sheathing and lubed by engine. Years now and still super easy. Before grease the longer i was using the boat during the day the harder the steering got, assume it got warm...
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    Oil pressure dropping

    I chased a Roush 427 for months with a similar problem. Oil pressure solid when cold 70psig. As soon as it got hot and above 4Krpm oil pressure would drop from 50 psi to 40 psi at 6k rpm's. Mellon (oil pump manufacturer said even though positive displacement it max flow is at 4K rpm's. I...
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    Exhaust manifolds, time to replace?

    First boat was 1987 3.0 liter mercruiser. Sold boat 2018 and still running today, 1000's of hours. All salt water. First manifold failed after 10 years. Back side of exhaust passage thinned over years due to exhaust gas temp boiling water on exhaust manifold. Rest of manifold was nominal...
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    Mercruiser starter replacement 350ci

    Get Mercruiser. Guy before me put aftermarket crap. Starter always made whine after it started. Bottom line Aftermarket garbage mounting holes were 1/16" off vs OEM. Even had to grind shoulders of mounting bolts. Went back to OEM perfect. That was 3 years ago
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    5.0 MPI Misfire Under Load

    It is extremely easy to check spark plug wire continuity. Probably 20 seconds. I had a similar issue and changed the fuel filter, the distributor cap with no luck. Changed plugs and no more miss. I assume you got genuine ac Delco spark plugs. Look in you plug wire and ensure the connection...
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    Quicksilver 5W30 for all sterndrives

    Yes smoke and mirrors, and Santa Clause is in the eyes of the beholder.....
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    Mercruiser outdrive gasket

    google my name I fought that crap for weeks. Either get a gasket without the rock hard sealant bead that acts like pintle or take some sand paper and smooth the stupid rock hard bead flat a little. make sure your housing is clean and roughed up a little. When I had just painted the surface...
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    350 mag mpi manifold/elbow temp

    So much guessing and wrong information. Your exhaust manifolds have temperature sensors in them and will alarm if get to hot. If you had a RInda then it would tell you the temperatures the exhaust manifolds are running that how I know mine. Cat manifolds run hotter than old style manifolds...
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    One pump of lube with vent screw in

    You must have an older alpha 1 without the remote lube reservoir. Blasphemy!!! I bet you have a car that doesn't monitor tire pressure also. You live a wild and dangerous life....
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Please don't ever replace your cat elements, eliminate them. Get rid of 4 rear oxygen sensors, run cooler exhaust, mitigate the chance of pre-ignition, extend life of exhaust elbows. Take savings and donate to local parks and wildlife. I am surprised you get more than 18 months out of your...
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    Small piece of plastic drain plug went into exhaust manifold

    I don't see how it can hurt anything, probably get flushed out when running in the water.
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    alpha 1 Gen 2 sterndrive broken lower drive shaft

    a metallurgist cold tell you what caused it just by looking at the fracture geometry. Do a search in your area for a materials testing lab. Walk in front door and ask them how much for an alalysis. I imagine before they even talk price they will tell you what caused the failure for free. My...
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    Alpha one gen II growling noise when turning

    Your outdrive style is a dime a dozen. It would be super sweet if someone would let you borrow one of theirs for a short run to eliminate the outdrive as the problem. I would get on your local Facebook marketplace. may even be a person selling a used one that will rent it to you for...
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    Alpha one gen II growling noise when turning

    That boat is CLEAN!!!! Run till failure. who cares if it makes a growling noise. probably gear lash in outdrive. I had a rear differential growl for 120K miles before I sold it.
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