1987 Sea Ray with 3.0 Mercruiser pouring water out the back of the motor

[Spivy30]

I have a 1987 Sea Ray that I just picked up from a family member the motor runs great but it is pouring warm water out of the back of the motor by the bellhousing. I'm thinking the block is cracked since the water is warm, unless there is any type of hose or seal in the back that could be bad/loose? There isnt any water in the oil and the motor runs cool. Also I noticed that the exhaust manifold is not being cooled so I pulled off the thermostat to see if it was stuck and even without the tstat the manifold still isnt being cooled. There is a nice stream of water going into the tstat housing and into the water pump, also there is nothing blocking the hose to the manifold so I have no idea why it wouldnt be cooling.

 

[BigBK]

Re: 1987 Sea Ray with 3.0 Mercruiser pouring water

Re: 1987 Sea Ray with 3.0 Mercruiser pouring water

there is a water hose thet comes from the impeller to the engine thet comes thru the transum just above the drive shaft. also check and see if water is coming out of the exhaust ports at the gimble they may be clogged

 

[Spivy30]

Re: 1987 Sea Ray with 3.0 Mercruiser pouring water

Re: 1987 Sea Ray with 3.0 Mercruiser pouring water

The water coming from the impeller is tight and that is cold raw water, and there is no water coming out of the exhaust ports or out of the hub.

 

[mkast]

Re: 1987 Sea Ray with 3.0 Mercruiser pouring water

Re: 1987 Sea Ray with 3.0 Mercruiser pouring water

Do you have a factory service manual for this engine?
The water circulation path is listed in the maintenance manual, follow it, look for the leak.

 

[Spivy30]

Re: 1987 Sea Ray with 3.0 Mercruiser pouring water

Re: 1987 Sea Ray with 3.0 Mercruiser pouring water

I dont can you download them off this site?