Slow leak at the exhaust riser fitting

[Joel_CA]

So I finally took my boat out of the garage to prep it for it's first dip of the season. After a couple of cranks, she fired right up and purred like a kitten. During my routine visual inspection, notice a small leak at the exhaust riser drain fitting. Just curious as to what the repair would be. Is this fitting threaded into the riser? If so, is removing the fitting and adding Teflon tape a viable repair? I'll eventually figure it out in the morning but just thought I'd get a head start with some info. Any advice would be greatly appreciated. 4K video included.

Joel

 

[scoflaw]

Sure or thread sealant

 

[Joel_CA]

So I had planned on removing the drain elbow to reseal it with Teflon tape to find that it is made of plastic. I tried backing it out and it wouldn't give - so rather than risking breaking it and grounding the boat till i find a replacement part- I thought I'd order the replacement part ahead of time. Can anyone tell me if this part is the same for all V8's? I need to make sure the coolant hose will fit it.

Joel

 

[northern]

If the fitting is plastic Teflon tape is probably not going to work well. On anti siphon fittings that are plastic going into brass fitting I used a lead based plumber sealant. Plastic has a different coefficient of expansion than steel so a seal at one temperature may open up and drip at another temperature. I am not a mechanic, perhaps others more qualified can comment why you can not use a metal fitting.

 

[scoflaw]

Merc uses metal elbows, order OEM

 

[Joel_CA]

Yep- ordered the OEM elbow and it was metal. Thanks!

J