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    Merc 3.0 Overheating

    I pulled the hoses, no problem. Water is entering the supply hose. Exhaust manifold is in good shape, as is the riser. I just notice that the two water outlets on the transom are not both spewing water, just the one. Here is a video of it: Not sure what to make of that. Could it blocked AFTER...
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    Merc 3.0 Overheating

    So I finally got to the boat and did the compression test. 145 across all 4 cylinders. That is down about 8 pounds from a few years ago when a shop did a comp test on it. So... I will pull all the hoses and check them next. Bleh.... I hate that job as it will probably be futile, but it is the...
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    Merc 3.0 Overheating

    Yes, original owner had it on a lake in Orlando, no trailer. I have had it on a lake just outside Orlando. I have taken over to the intercoastal once, just for three days. So... no saltwater. I will check compression next. Good thought, though the oil is clear and there is no sign of water in...
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    Merc 3.0 Overheating

    Greetings. I have been combing these threads looking for answers. My boat is getting hot. It shoots up to 175 at idle and goes up from there if I give it more gas. Mercruiser 3.0, Serial number 1A000334 (2004 ish), freshwater boat. These are the steps I have taken thus far: 1. New impellor -...
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    1950's Johnson 3 HP

    I just finished putting in a rebuilt kit on a carb for this old motor. I put it back together and she started on the 2nd pull! However, I then noticed gas dripping from the carb. I shut it off and it leaks as soon as I open up the gas tank vent and open up the gas line. I have studied it and...
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