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    Light u-joint noise hard turn starboard

    Easy solution don't turn to starboard.
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    Mercruiser 8.2 w/Cats & Closed Cooling Question

    A lot of bad and incorrect information on this thread. You don't have to replace the catalyst in the manifolds. they will last a lifetime. The manifolds are extremely robust and from my saltwater experience will last a lifetime. the exhaust elbows may need replace if engine begins to overheat...
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    2002 Mastercraft 5.7 harmonic balancer moving in and out

    I would replace crank and bearings. put oil pan back on and take my chances. Option two go with short block from OEM. There are no crafts in the world anymore, machine shop, not worth the wait or headache....
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    The first thing I would do is become intimate with your cooling system and how it flows. how enters and where it goes. You can do that in Air Conditioning there are diagrams everywhere. Second since you have a huge boat is validate flow while in the water so you dont have take it out. I...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    I fear Bravoits but with your model boat I would abandon the outdrive pickup and go with through haul fitting for water pick up.
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Catalytic converters, bravoits, horrible access, my next boat will have an outboard. the inboard/sterndrive is dead.....
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    Mercruiser 6.2L Catalyst Removal

    So only issue with removing catalyst is alarm beep since post cat o2 sensors won't read correctly with no Cats. So two options remove catalyst and cut siren so you dont hear beep or buy module that simulates O2 mv signal to PCM so alarm isnt generated. The only requirement with your new...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Both manifolds running hot. Engine not? Other engine no issues lived in same environment. Sounds like flow issue. Enough flow to keep engine cool at low rpm's but as heat load increases due to load not enough water flow. Would really like to know engine temp when manifolds were hot. Oh wait...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    You have tons of room. CHANGE THE IMPELLER AND RETEST. NO BRAINER. Pull suction hose and plug with bolt. Since other engine doesn't have problem and lived in same environment than hard to thing one has bravo tis and one doesn't. much more likely impeller worn etc
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Just saw your title you have bravo 3. You need to verify unobstructed flow to your seawater pump. Any air leaks, restrictions screws you. Nice thing about Alpha you are pushing the whole way, nice thing about Bravo you don't have to take outdrive apart lol I sure wouldn't loose any sleep...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    You need to ensure you have water flow. Volume. Your Rinda will tell you pressure what did it say? Where is your seawater pump, is this an Alpha 1 or Bravo 3? Alpha 1 in outdrive, Bravo 3 on engine. Engine has two water pumps one that pumps seawater to engine and one that circulates through...
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    Mercruiser 6.2L Catalyst Removal

    use the search feature
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    The great thing about these MPI Cat engines is there is commonality with your automobile engine. Once you learn the different sensors as you are currently doing and their location the engine no longer looks like a big black box but pretty simple unless a gremlin keeps adding sensors at night...
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    2002 Mastercraft 5.7 harmonic balancer moving in and out

    Holy **** that a first, wow. engine needs to come out.
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    Can water get into oil from failed exhaust parts?

    In the old style manifolds the exhaust manifolds would thin right where the exhaust gases entered the exhaust manifold. You have 700F exhaust hitting 3/16" cast iron with water on the opposite side. You end up with erosion corrosion. Usually it looks like a hairline crack. I had a 3.0 liter...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Your will die out like me one day and the world will be a better place, lol. Most people under 35 don't even know what a carburetor is, under 45 points and condenser. They will be held hostage to what is sold new as they have zero chance to keep anything running themselves. They are...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    I have been looking for a 2006? Searay 205 with a failed engine (freezing etc) that I could pick up "cheap" I would then turn around and install a 350 carb engine and have the best of every world, brutally simple, brutally fast, fairly inexpensive. That said my buddies volvo froze and by the...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Rumor is all PWC and Outboards and any marine engine will have Cats by 2026. Zero liability for removing cats. There no enforcing entity, no jurisdiction. Remove Cats put old O2 sensors where they are supposed to go in elbows take long leads and tie them deep under the manifold, looks like...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    get on Parts VU for the elbows, I replaced manifolds and elbows for $1700 total (pre covid) Pull your elbows off, clean gasket surface, get pressure washer and blast passages (take out allen head plugs to really blast it). Unless the end of yours broke off you can clean and reuse. In the old...
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    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Just to document this here in case someone else needs it "My experience with clearing codes is you have to clear the codes AND go into history and clear history!!!! Both places. That will clear the codes, if you just clear codes in codes it shows clear but if you disconnect and reconnect the...
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