Omc cobra water leak

[Snaspen101]

I have a 1989 four winns vista 245. It has the 7.5l 460 with cobra outdrive. My issue is I have water leaking from rear of motor. I can't tell from where. I have good flow from impeller through the lines. Both exhaust manifolds drains ate closed. Am I missing a drain or is there something else that could cause this? From what I can see, I have no leak from from inlet hose around the the block. It seems to be coming from rear of motor. I might add it flows at a good rate as well. It's leading me to believe there is another valve I'm missing. (Raw water cooled).

 

[kenny nunez]

Does the water leak when he boat is sitting in the water without the engine running? Or only leaks when the engine is running?

 

[Lou C]

There are a couple of hoses back there that come in from the transom, they can be hard to see but it could be that....the 7.5 appears to have an engine oil cooler back there as well. Could be that or hope not, a core plug in the block.

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[Snaspen101]

Both oil coolers are on the right side, no leaks from them. I'm going to try to get better look. Really tight spot

 

[Snaspen101]

Both oil coolers are on the right side, no leaks from them. I'm going to try to get better look. Really tight spot

Sorry I meant left side

 

[Snaspen101]

Does the water leak when he boat is sitting in the water without the engine running? Or only leaks when the engine is running?

Have not had it in the water yet, with the muffs on and motor running it leaks inside the engine bay at back of motor. I can't tell where from, the main line in from transom all the way around the motor from what I can see is fine.

 

[Bondo]

Have not had it in the water yet, with the muffs on and motor running it leaks inside the engine bay at back of motor. I can't tell where from, the main line in from transom all the way around the motor from what I can see is fine.

Ayuh,.... Welcome Aboard,..... Does yer phone have a camera,..??

It'll fit into Alota places yer head won't,......

Where do you live,..??
How was the boat winterized,..??

 

[Snaspen101]

I'm in New England, I'm not sure on the winterizing, though all the water was drained from the boat. And as far as the camera goes, not a whole lot of room around the y pipes while it's running, and it's really hot behind there. Not much room being the size of the motor. I'll have to try it though.

 

[Snaspen101]

I found what I think , well I know is an issue, freeze plug is missing, gonna replace and try again.