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    Speedometer Hose Hanging from Lower Unit. Can I just cut it? I Don't Need it!

    Hello All, I recently bought a boat with twin 2002 Mercury Optimax 150 (BlueWater Series). I noticed the speedometer hose hanging from the lower unit of the STB engine and I want to cut it (see picture). I really don't need the speedometer from the engine since I have a GPS unit. Can I just...
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    World Cat Deck Wall Delamination Inside Core/Front and Back of Piece/Wall is Solid

    Hello All, I found water trapped in the core /sandwich (between the fiberglass layers) of my World Cat deck wall (under the fishing coaming bolsters area). I recently bought this 2000 WC 266SC. The boat looks and performs perfect (like knew). However, when I tried to cut a small hole on the...
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    Spark Plugs and Gap for 1995 Mercruisers 7.4 (454)

    Hi, I recently bought a 1995 Sea Ray 330 with twin inboard Mercruisers (MIE 7.4) 454s. The engine cover says that the spark plug is the AC-MR43T (035 gap). But they dont have those plugs at the local Autozone. Is there any other spark plugs you recommend? Some people dont like to change when it...
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    1999 Yamaha OX66 Low Idle, Dies

    Hi, I need some advice. Is there anything I can do to adjust the idle speed for a 1999 Yamaha 150 OX66? The engine runs well under load, but idles at 600 RPM, then after 15-20 seconds it goes down to 400 and dies. Sometimes (after it reaches 400 RPMs) it comes back to 600 and keeps running...
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    1999 YAMAHA OX66 Idles at 500 RPMs

    Hello, I have twin 1999 Yamahas OX 66s. The Port Side engine idles at around 800 RPM. But the starboard one idles at aprox 550 RPMS (sometimes at 600) . After a few minutes it goes down to aprox 450 and dies. Sometimes goes back to 550-600 and keeps running. I have the boat in the water now (not...
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    Bubbles Coming Out of 99 Yamaha 150 OX66 lower unit/prop

    Hello, I have a (new to me) 1999 Glacier bay with twin 1999 Yamahas OX66s. Today I ran the boat for the first time for over 1 hour. Both engines were running fine at low and WOT. No alarms and both pee streams were fine (not hot and strong). However, after I docked the boat (at idle RPM/around...
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    Need the Proper Charger Amps Rate for a Heavy Duty Dual Purpose Marine Battery

    Hello, I am trying to find out the best way to charge and maintain my batteries. I bought them last year. I called the company that makes them and asked them what charging rate they recommended. The lady (I think shes is the receptionist) said that a 2 amps or 4 amps charger would be ideal. But...
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    1999 Yamaha 150 (OX-66) Impeller replacement Shaft Feels Tight After New Impeller

    Hi, I just replaced the impeller on both 1999 Yamahas 150 OX 66 lower units. But now the shaft feels tight when I turn it by hand (about the same on both units). I followed the instructions form other postings online and I used Yamaha parts. I put a new impeller, new housing, new base and...
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    1999 Yamaha 150 (OX-66) Impeller replacement question

    Hi, I recently bought a boat with twin 1999 YamahaS 150 (OX66). I removed the lower units and tried to replace the impellers, only to realized that need a special tool to remove the upper seal. However, the old impellers look like new (see picture). Please let me know if I should take the...
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    2002 Mercruiser 4.3 MPI Belt Makes Noise and Looks Off Track(By water pump pulley)

    Hello, I have a 2003 Regal Comodore with twin 2002 Mercuisers 4.3 MPI (Bravo 3). I just noticed that my port engine is making make a noise. It comes from the belt. It seems like the water pump pulley is not turning straight. The belt seems fine (I fully inspected it). Its a raw water intake...
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    Wema fuel sender Damaged. Rod and float came lose inside fuel tank

    Hi, I have a 2003 Regal Comodore 2860. The fuel gauge doesn't work. I checked the fuel sender and it seems like the rod came off (you can see a thin rod w diodes in direct contact w the fuel). The rod measures 13" . I can order a new fuel sender (I think just another wema 13" should be fine)...
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    2002 Mercruiser 4.3 MPI dies when running at 3500 RPMs Then runs fine at lower RPMs

    Hello, This is not the first time I post this problem. I?m just starting a new threat to avoid confusion. I initially though that it was an electrical problem, but after hours of checking, the electrical seems to be fine. I have a 2003 Regal Comodore with twin 2002 Mercruisers 4.3 MPI (Bravo...
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    Mercruiser 4.3 MPI/Bravo 3 . Th engine dies at high RPM. Possible vacuum leak?

    Hi, I have a 2003 Regal Comodore 2860 with dual mercuirsers 4.3MPI. I was running the boat yesterday; everything was going well (both engines were reaching 3,800 RPM). Suddenly, I heard two beeps and the port engine died. The starboard engine was fine. I was able to re-start the port engine...
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    Engine will not start. No gauge movement!

    I have a 2003 Regal Comodore 2860 wuth twin mercruisers. The starboard engine will not start. When I turn the key, nothing happens. No gauge movement, nothing. The port side engine works fine. 1-I checked the starting switch (is fine/I switched it with the port side) 2-I have 12 volts at the...
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    Engine will not start. I need help overriding the Fireboy FE241 auto shutdown

    Hi, I have a 2003 Regal Comodore 2860 with dual mercuirsers 4.3. I need help bypassing the Fireboy (FE-241) engine shutdowm system. Today I tried to start the port engine and the Fireboy alarm/green light beeped and blinked 5 times. After that my engine will not start (I turn the key but nothing...
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    Trim rams anodes almost gone. How much longer in salt water?

    How to Properly Connect the the Hanging Zinc Anode (The Grouper Zinc) Hello, BLUF: 1-Is it Ok to clip the cable to the battery -(ground) or do I really need to clip it to the bolt on outdrive? 2-Should I place the Grouper Zinc in between the outdrives or to the side? I have a 2003 Regal...
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    Mercruiser exhaust Y pipe leak... or bellows needing replacement?

    Quick question: Is there a good reason for all the amount of sand I had to take out of the upper housing (upper seal area)? I wonder how the sand got there. See picture. BTW, I ordered the stainless plate from JRmarine and made the cutout. Im waiting for the marine mechanic to help me remove the...
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    Mercruiser exhaust Y pipe leak... or bellows needing replacement?

    Quick update. I went back to the boat and found water coming in from the top area (right under the steering level/where the steering level enters the outdrive). See attached picture. I will have the marina staff pull me out of the water. Lets hope its just the bellows!
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    Mercruiser exhaust Y pipe leak... or bellows needing replacement?

    Hello, I have a 2003 Regal 2860 with twin Mercruisers 4.3 MPI, Bravo III. I just noticed the bilge pump working every 5 minutes or so (just pumping a little water). I went under the engine and I saw water slowly dripping ( coming from the port engine...under the exhaust Y pipe). See attached...
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    Engine Oil change..Is it Ok to use a Fram filter and regular motor oil? JUST OIL TYPE

    Hi, I'm trying to change the oil on my twin 4.3 MPIs. The boat is a 2003 Regal...not sure about the engine year (cannot locate the serial number). I bought the boat earlier this year and it has a fram oil filter. Do I really need to buy the Mercruiser oil and oil filter? OK> I will answer my...
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