water in cylinders

[jrodgers]

I have a 99 Johnson 250 Ocean Pro. My problem was that the motor would not start when I went to take my boat out (for Isabel none the less). Mechanic came out from the marina and pulled the plugs and water was in all the cylingers but poured out of the bottom 2. Left it in their hands (although I can work on 2 stroke motor am not comfortable with marine yet). I expected the worst. They called me back and told me that they checked everything out, did compression test, could not find any leaks, put the motor back together and it ran fine. They ran it for a couple hours and it was fine. They were going to run it again for a couple hours but they thought it was fine. What I think it was is when I flushed it out after the last use I think I did something wrong, because I remember it stalling out, which it never did before. Any ideas as to what happened and should I be worried about the future. Oh and also have been running the boat for this whole season pretty regularly with no problem. Thanks...

 

[cpasseno03]

Re: water in cylinders

Wow... Wet cylnders with no mechanical problems. without a bad gasket or cracked head/block the only way in there is thru intake or exhaust. So... I am assuming you didnt put a hose down the carburetor, which makes me wonder how flushingwater couldve been forces up the exhaust somehow, you said you flushed it, with those muffs I imagine? mebby too high of flow? thats all I can come up with!<br />C

 

[jrodgers]

Re: water in cylinders

I actually used the outlet on the back of the motor. The one thing is that the marina has really good water pressure so I dont know if that makes a difference. How I flushed it is: 1st Let motor cool down for about 10 mins, Then raised the motor up all the way out of the water, attached the hose to the back of the motor, turned on the water and started the motor. It ran for a couple mins, and then shut out. But when it shut down it made the same noise as it makes when you put it in gear then shut down. Thinking it wasnt all the way in neutral, I played with the throttle and started it again and it did the same thing. Had to go so I just left it not thinking anything of it.

 

[jrodgers]

Re: water in cylinders

It was attached to the part where you unscrew the threaded piece with the (I forget what it is called but the part that pees the water out) and screw the hose in. Then the water comes out where the prop is when the motor is running.

 

[ezeke]

Re: water in cylinders

Are you flushing with the motor tilted up?

 

[clanton]

Re: water in cylinders

You said you raised motor completely out of water. If you used the tilt and trim to raise engine as high as the trim will allow, water will probley run thru the exhaust ports into the cylinders

 

[ezeke]

Re: water in cylinders

Thought I would jump back in here for a second. We have to flush the motors a lot here because it's all salt water use. This is the drill:<br />1. Motor should be in running (vertical) position during the entire flush, and should be left there afterwards so that the water can drain out; 2. You don't need or want high water pressure, the water pump will provide all the pressure needed - you just need volume; 3. If you use a large water-filled container your neighbors will like you better; 4. Flush 5+ minutes.

 

[jrodgers]

Re: water in cylinders

Yes, the motor is all the way tilted up. I had someone else tell me it could have come in through the exhaust port when the motor was trimmed all the way up. Well what is the correct way to flush this motor out? It is used only in salt water, so I like to flush it out every couple times. If the motor is all the way down wouldnt it suck in saltwater while flushing thus defeating the purpose? And thanks again for all the replies....

 

[jrodgers]

Re: water in cylinders

Has anyone had any other problems with this motor?

 

[Solittle]

Re: water in cylinders

You need to follow ezeke's advice. What you can do is put the muffs on with the motor raised then lower it down to vertical - start & flush. It should not suck saltwater if the muffs cover the intake. You should be able to pull the muffs off with it still in vertical.

 

[93bronco]

Re: water in cylinders

from what i understand is- you keep the boat moored at a dock 24/7 in salt water.<br />you are flushing motor thru factory flushing port.<br />-<br />even if you put muffs on and lower motor how would this flush salt water?<br />-<br />when using the flushing port, do you have to do it with the motor running?<br />if not flush the upper part, let water drain- tilt up and spray lower unit off.<br />-<br />unless i miss understood what you were saying.

 

[rodbolt]

Re: water in cylinders

Hello<br /> I have seen this same problem several times at the marina I do a lot of work at. seems water can back up the exhaust and be sucked in the ports. try trimming the engine putting on muffs the lowering the engine toits normal attitude flush it then remove the flusher.I dont trust any of the motor mounted flushers whether its on a yam a rude or a merc. flush it through the pump and be done with it.<br />Good luck and keep us posted.