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    110 Johnson, sputtering and coughing

    Low 80's, 110hp Johnson that I can't get to run smoothly. VRO has been deleted. Plugs and coils are good. Fuel filter replaced. Had the carbs cleaned but not much faith in the mechanic. When I got it back it was leaking gas from the small fuel lines. He didn't replace them and I had to bring it...
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    50 hp mercury, 2 stroke. No spark from cylinder 2

    Recently picked up a very clean 1982 Mercury, 50 hp. Compression test is about 150 in all 4 cylinders. Put it in the lake today for the 1st time and it had intermittent power, never getting on plane. Brought it home and ran it with muffs. Removed coil wires one at a time and noticed no...
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    1986, 110hp Johnson running rough

    Greetings. I have a 1986, 110hp Johnson, V4 that is running rough. Compression is as follows; top starboard cylinder is 100, lower is 105. Top port side is 105 and lower is 100. When pulling the plug wires one at a time as it's running there is no noticeable difference on the two port side...
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    Intermittent alarm

    I pulled the plug apart and removed the oil tank. I ran the boat on muffs today and the alarm went off shortly after starting. I checked the temp of the heads and they were about 82 degrees and the "bubble" water jacket was at 64 degrees; clearly not overheating, and has a good water stream...
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    Intermittent alarm

    Greetings. I have a 1986 Johnson 110hp that I recently picked up. I deleted the VRO and mix oil with the gas. I have an alarm that goes off within a minute of starting the motor. It's not a constant beep but it's intermittent. The alarm comes from behind the steering wheel in the helm...
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    Check valve and filter assembly

    Ok, thanks
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    Check valve and filter assembly

    Compression is 110 in two cylinders and 105 in the other two. I have disconnected the VRO and am running with mixed oil/gas.
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    Check valve and filter assembly

    There is a small screen in the threaded end and a nipple is busted off the other end
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    Check valve and filter assembly

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    Check valve and filter assembly

    Can someone tell me the purpose of the check valve and filter assembly on my mid 80's, Johnson 110hp outboard? It threads into the engine with about 1/4 inch diameter threads and has a very small nipple at the other end. A hose pushes onto the nipple. There is a small filter screen inside...
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    Best prop?

    Greetings, recently purchased a 21ft pontoon boat with 19inch pontoons. Motor is a 80hp Yamaha, 4 stroke, carbed. Previous owner told me he put that motor on the boat and that it came off of a fishing boat. The prop is a 13x19 and needs replacing. Since the motor was on a fishing boat, I'm...
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    Flush kit install

    Thanks for the info on the plastic fitting. I will definitely find a metal one. I know that I need to install the y-tee between the outdrive and the water pump but I was wondering if the larger (I believe 1 1/4 inch) hose is the correct one or is there another that I'm not seeing? The boat is...
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    Flush kit install

    Bravo 3 outdrive
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    Flush kit install

    Looking for direction on installing a fresh water flush kit on a 2007, 24ft Rinker, deep V with a Mercruiser 350 Mag MPI. There's a larger red hose , maybe 1 1/4 inch ID, that runs along the lower starboard side of the engine. I'm guessing that it runs from the transom to the water pump? Is...
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    Yamaha 80hp, 4 stroke runs rough

    Here's the history. recently bought this pontoon with a 2001 80hp, 4 stroke Yamaha. Knew it had an issue when I bought it. Previous owner brought it to a local marina and they said it needed the carbs rebuilt. After sitting at the marina for weeks without getting worked on, the owner went and...
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    running rough

    Update. Let the engine run for a couple of minutes and did another compression test with the idle lever fully lifted. Compression was 190, 200,190 and 190. Will order rebuild kits for the carbs and attempt to clean them? Any pointers on that would be helpful.
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    running rough

    Just purchased a pontoon boat with a 2001 80hp Yamaha 4 stroke. Motor looks very clean. Knew it had a problem when purchasing. Previous owner said boat was running fine for months then problem occurred where it wouldn't get over about 1200 rpms. They changed the fuel filter and fuel lines...
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    Only runs when cranking

    Well the boat is running and after a few days of searching for the problem, I am still at a loss as to exactly what it was. The purple wire from the ignition was definitely losing power but not quite sure where. As I mentioned, the boat was trailered through a terrible rainstorm without the...
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    Only runs when cranking

    Here s where I'm at. The ignition switch seems to be ok. It's a three prong switch. I have constant power to the red terminal on the back of the switch, power to the purple wire when the switch is in the on position and power to the yellow wire when in the crank position. All gauges work...
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    Only runs when cranking

    Have a Mercruiser 4.3 ltr, 1995. Recently purchased, clean boat. Carbureted, electronic ignition. Had it on the lake and was running great. Trailered it home during a severe rainstorm and got lots of rain and moisture in the engine compartment. Went to the launch a few days later and it'll...
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