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Water leaking into back of engine compartment
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Author:  mpolander [ Fri Jul 29, 2016 8:50 am ]
Post subject:  Water leaking into back of engine compartment

I have a relatively slow leak behind the engine. Any ideas of what this could be?
I thought about removing the out drive this fall to see if it was a seal.
I am getting tired of flipping on the bilge pump every 20 minutes or so.

Author:  LouC [ Fri Jul 29, 2016 9:37 am ]
Post subject:  Re: Water leaking into back of engine compartment

I would be pulling off the outdrive now actually, because if your driveshaft bellows is leaking, then it is going to cause other damage such as rusting your gimble bearing, u joints and driveshaft. Unless the drive was pulled recently and you know the d/s bellows is good. That's about the easiest leak to fix, other transom related leaks are more complex. Possible causes:
transom seal (requires drive removal, engine removal and taking apart the transom mount)
transom rotting (all of the above plus transom repair)
Y pipe leaking either at the seal or its corroded (same as above)

While a leaking bellows ain't great its way better than the other possibilities.

Author:  captkevin [ Fri Jul 29, 2016 9:40 am ]
Post subject:  Re: Water leaking into back of engine compartment

Given the age of your boat & the rate of your leak it should be looked at sooner than later.

Author:  rpengr [ Fri Jul 29, 2016 12:01 pm ]
Post subject:  Re: Water leaking into back of engine compartment

LouC wrote:
I would be pulling off the outdrive now actually, because if your driveshaft bellows is leaking, then it is going to cause other damage such as rusting your gimble bearing, u joints and driveshaft. Unless the drive was pulled recently and you know the d/s bellows is good. That's about the easiest leak to fix, other transom related leaks are more complex. Possible causes:
transom seal (requires drive removal, engine removal and taking apart the transom mount)
transom rotting (all of the above plus transom repair)
Y pipe leaking either at the seal or its corroded (same as above)

While a leaking bellows ain't great its way better than the other possibilities.

+1

That's a great summary.

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