18
Mar
In your case some leaking petrol has probably flushed it out. Normal in fact.
As your engine cools down the water vapor in your cars exhaust system cools down to form water.
Water coming out of exhaust on outboard motor. Hi The water always comes out through the exhaust whether it be through the exhaust holes at the back of the motor or the prop. The cooling comes out through the exhaust as an exit point and for cooling the exhaust. When at idle a very small amount comes out the back of the motor which is normal when on plane you will see allot of water coming out these holes.
Water coming out of the exhaust port above the water telltale. It is not steam. Tilt motor up and it disappears tilt motor all the way down and water sputters out.
I did change the muffler filter during the service installed with a new rubber gasket wondered if I should have used a sealant of the gasket. The water pumps really well no issue there. Yep its supposed to be comming out of there.
The tube going down from the thermostat housing to the backbottom of your engine and connecting to the exhaust plate fitting is where the water is comming from. You fixed a problem you didnt even know you had. Ill bet your tell tale is weaker now too.
As your engine cools down the water vapor in your cars exhaust system cools down to form water. The water is released from the exhaust system as droplets when the engine is warmed. Water formed through this process should not cause alarm.
If your tell-tale was weak impeller worn and weak then you would have less water going through the by-pass to the exhaust. If tell-tale is weak and lots of water is going out the exhaust then you probably have a pressure valve stuck open. If water is only mistingspitting out of your back port at idle then you should be fine.
Since boat engines are designed to run at constant RPMs and are put under intense loads it is very important to properly break in your motor. How many hours can you get out of an outboard motor. How do you break-in an inboard boat motor.
The 10 Hour Sea Trial. Safely run the engine with the boat in the water. Yes water should come out of the prop hub with the exhaust.
I would take it back to the shop that worked on it last they goofed something up or your water pump has gone bad. If you look at an automobile exhaust that has been idling for a while you will see water dripping out. When hydrocarbons burn they produce water as steam.
At high revs the water disappears because the the hotter higher flowing exhaust prevents the steam. Since water accompanies exhaust and somewhere in the engine is a cavity that has residual water after the engine is stopped then you get both till the stored water is exhausted. I wouldnt worry about it given what all you said about your engineCount sheep instead of worrying about nothing when trying to go to sleep.
Yes this sounds like the residue of the fuel oil mix if the motor is running on all cylinders it can be a result of a rich running condition in the carburetors or the result of having to use the choke more than usual if the motor exhibits a rough running characteristic at idle or if it seems to use more fuel than before you could have a problem with one of the carburetors todays gas has additives that will wash the old deposits in the exhaust out. Water coming out of those 4 holes is good I would think indicating that water is coming through the engine and into the exhaust section most of which will go through the normal exhaust run. Id run it for 10 to 20 mins at around 14 revs and do the finger on the engine test you may not have a problem at all apart from a blocked tell tale.
Update to my problem. I tore into the head and exhaust cover all clear thermostat had some sand and grit in it cleaned it out. Checked the water pump again no problems there.
The engine is a thru hub exhaust and i noticed the water is poring out of the hub when it is running its like the water isnt even making it to the head. The two exhaust holes on the back of the mid section have water coming out. Outboard engines will discharge exhaust gases underwater typically through the propeller while the exhaust from inboard engines appears just above the waterline along with the discharge of cooling water.
The exhaust system in your car works by getting rid of the byproducts that are created when your car is running. The byproducts are expelled through the tailpipe and you may find a little bit of water leaking out of the tailpipe. This typically isnt a huge concern it just means that there is a little bit of water in your exhaust system that needs to get out.
Outboard engine cylinders also take a beating when it comes to ingesting water from their environment or cracking as a result of improper winterizing procedure. Some outboard cylinders simply crack from heat and stress. The steam you notice is a normal occurrence on most outboard motors.
The exhaust gases exiting the engine block may reach the 1200-1500-degrees F range when under heavy load. They are directed down an exhaust chamber inside the midsection and out the propeller hub. Some of the cooling water from the engine is directed to quiet and cool the exhaust gases as well as surrounding the exhaust chamber further silencing the motor.
Changing out the lower unit lube and getting it started and changing out spark plugs. It would start and die with the old plugs so I put in new plugs NGK and it started up and ran fine. When I went to the back to look a it I noticed that it looked like water was coming out of the lowest spark plug.
It didnt look mixed just clear water. Allowing some gas to leak over the prop causes the prop to rev up in the vented water helping bring the boat on plane quicker. Propping and exhaust on an outboard is actually a very involved process.
The amount of engineering that goes into a prop and the exhaust set up is actually quite impressive. 2 Check the Water Intake. Turn the engine off and check for anything such as weeds or trash which may be blocking the water intake.
If a foreign object is present remove it and restart the engine after it has returned to normal temperature. 3 Check the Water Output. In most outboard motors the water output is a small tube-like structure.
The water comes into the outboards engine through the lower unit which is below water level as the boat is moving. Without a pump of some kind water couldnt flow up to the engine. Is it OK to start a boat out of water.
Flushing a boat motor by running it out of water is a routine maintenance task. Running the engine without a water source for any length of time will. Looking for some help with an issue we are having with our 2005 Yamaha F225TURD.
We recently pulled the outboard apart to install an exhaust corrosion kit new water tube new oil pumpcrankshaft speedi sleeve new water impeller and new fuel injectors. We got it all put back together and went to test run it and it fired up. Not at all uncommon.
Normal in fact. For some black oily residue to drain from a 2 stroke outboard. Its just partly burnt oil from the fuel.
In your case some leaking petrol has probably flushed it out. Be aware that leaking gear oil would indicate a leaking gearbox oil seal which would almost certainly allow water to enter.