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It could have a blown head gasket or a hole in the piston if it cranks and dies. Please clarify you question. Does it run for a little and slowly dies out? That could be a bad fuel connection allowing air into the system.
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∙ 14y ago
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Where is the water pump located on a 15HP mercury outboard?
The 15 horsepower Mercury outboard motor does not have a water pump. The outboard motor is air cooled and does not have a need for circulating water.
How does mercury outboard water pump work?
A Mercury outboard water pump is a engine cooling system. A outboard water pump is what blows steam through to get the car cool,
How long can you run an outboard with out water?
Because the water pump on an outboard engine consist, in part, of a rubber impeller, dry running causes almost instant damage. In as little as 30 seconds the impeller can become unservicable. A run with no water for one minute or longer, in plastic housing applications, begins housing melt down and powerhead/seal damage. It is not good practice to run your outboard without water.
What happens to the water that causes it to evaporate?
you will die.
What causes a 250 Yamaha outboard to overheat while running?
While there are several causes of overheating, the two most common reasons, by far, would be a damaged or worn water pump, and or a faulty thermostat(s).
Is sears 3.5 gamefisher outboard engine air or water cooled?
Most outboard boat motors are water cooled to my knowledge
What causes roses to turn brow and then die?
Lack of water
What effect does ozone have on water?
Ozone has a direct affect on water. Ozone depletion causes water organisms to die.
Water pump 115 Johnson outboard?
does the lower unit need to be removed to replace the water pump on a 1995 Johnson 115 hp outboard engine
What causes an outboard motor to lose power after running for 1 hour or so?
No gas?
What causes a bad idle on 50 hp outboard engine?
carburetor or spark plugs
What color is water in the oil of your outboard motor?
White
