![]() ![]() ![]() So if you have a clue that your pump might be going bad or is already shot, get on replacing it or call the mechanic. If the flow of this water ever changes or goes away, check your impeller ASAP. On outboards, this is a tell-tale–a small, steady stream of water that shoots off to the side of the engine. Marine engines have a visual indicator to let you see the water flowing through the engine. The most important part of this list is the first item. The water temperature gauge is rising (unfortunately, many boats lack this vital gauge!).Tell-tale (aka the “pee hole”) water flow reduced.Check your garden hose, make sure that it is attached to the water. These are just a few of the ways of how to tell if your outboard water pump is bad. How To Run An Inboard Motor Out Of Water 1. Signs of overheating might include the following. Impellers are cheap, and if you’re handy, it’s a good idea to keep a few on hand. If he didn’t fess up and you didn’t catch him, you might have no idea what happened until things start going wrong.Īny overheating signs indicate it’s time to replace your impeller. If you caught him in the act or he fessed up, there are a few things you can do now to make sure no further damage is done. Okay, so your numb-skull brother-in-law started your boat out of the water. What If You Accidently Started Your Boat Out of the Water? The whole lower unit needs to come off the motor! Expect a mechanic to charge $300 or more for the job. And even though the impeller is a $10 or $15 part, it still takes the better part of an hour to get the job done, even if you’ve done it many times. Sidenote: When was the last time you replaced your impeller?īut replacing the pump housing is much more expensive. The rubber impeller is a service part you should replace at least annually. If the impeller starts breaking apart, bits of it can get sucked farther into the engine, where it could clog up the water passageways.Īll of these things decrease the effectiveness of your water pump and decrease the amount of cooling your engine gets. If there are any sand, grit, or salt deposits in the pump or water lines, the impeller will begin rubbing and scoring the pump housing. In a matter of seconds, the impeller will begin failing. The rubber blades of the impeller rub the walls of the pump housing. You should get water coming out of the exhaust reliefs at the bottom of the gimbal housing, even with the engine not running. Pull the drive, stuff a water hose into the water passage in the bell housing and turn the water on. If you run the pump out of the water, heat builds up quickly inside the pump. You may find a little leaks passed the impeller, but it shouldnt be much. The pump’s drive shaft is connected to the engine drive shaft–so if the motor is on, the pump is always spinning. The pump housing is cast from aluminum or bronze and has no lubrication other than the water moving through it. The water pump of a boat engine uses a small rubber impeller to suck water from outside the boat through the motor. But this overlooks the problems you’ll have in the future. Most people believe that since they are only starting the engine–not leaving the engine running or letting it get hot–it will be fine. Nearly every marine engine uses raw water to cool itself. Let’s set the record straight right now–it’s a bad idea. Can You Start a Boat Out of Water–Good Idea or Bad? ![]()
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