Stuffing box and black smoke

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Sep 1, 2009
69
2003 Hunter 326 Lake Erie Ford Yacht Club
Been a trying year so far. Just got boat in and went put for trial run. Had to adjust stuffing box, leaking like a sieve. Think it may be too tight, water coming out a little but it was gray to black color. Heard this may be packing material starting to burn. Can I just loosen or do I need to re-pack? Ran engine for a total of 2 hours before I noticed. Hopefully did not hurt shaft. Also ran through some tall weeds in shallow water. With a wing keel this puts quite a drag on boat. Twice while dredging through weeds black smoke came out of exhaust in water. I just throttled down, let it idle than proceeded. After got put of weeds it appeared to be alright. Any thoughts.
 
Jan 4, 2006
7,199
Hunter 310 West Vancouver, B.C.
Think It's Time for a Repack .....................

Think it may be too tight, water coming out a little but it was gray to black color. Heard this may be packing material starting to burn. Can I just loosen or do I need to re-pack?
........................ if you're showing possibly burned material. Once packing gets burned, most of its sealing properties would be compromised. Remember, the nut shouldn't require much more than hand tightening to snug the packing. Wrenches are only for cinching up the lock nut against the gland nut.
 
Sep 2, 2009
339
Hunter Vision-32 New Hamburg, NY
black exhaust when in weeds

been there - done that ..... I just threw it into neutral and drifted a bit while I tried to figure out what happened ... reversed for a few seconds, then back to forward and all seemed well again.
 
Jun 6, 2006
6,990
currently boatless wishing Harrington Harbor North, MD
If the packing is new9ish) it may just be dry ( from being out of the water) and is leaking due same. Or it could be shot and need replaced.

The black smoke is normal and unless it happens under normal conditions I'd not worry myself. Think you diagnosed that one all by yourself!!!! Welcome to SWEAT (Society of Workers Engaged in Ancient Trades)
 
Sep 1, 2009
69
2003 Hunter 326 Lake Erie Ford Yacht Club
Thank you for all suggestions. There was a good amount of weed debris in water strainer also. Cleaned that out, should be fine as long as I stay away from the weeds. Lake Erie is tough. Stuffing material is 10 years old and boat was in water two weeks before I sailed, so it was not dry, probably just tightened the nut too much. I do not want to take out of water to re-pack, can I loosen to allow more drip and motor or will it ruin the shaft.
 
Dec 1, 1999
2,391
Hunter 28.5 Chesapeake Bay
You should be able to repack the gland while in the water. Just think about all the steps before you start and have a working bilge pump. I can email you with how I do it if necessary.
 
Jan 4, 2006
7,199
Hunter 310 West Vancouver, B.C.
Not a Problem .........................

I do not want to take out of water to re-pack, can I loosen to allow more drip and motor or will it ruin the shaft.
........................... to do it in the water and not get too wet (actually, not at all).
 

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Sep 1, 2009
69
2003 Hunter 326 Lake Erie Ford Yacht Club
Re-pack in water

You should be able to repack the gland while in the water. Just think about all the steps before you start and have a working bilge pump. I can email you with how I do it if necessary.
Please send any information, thank you.
 
Dec 1, 1999
2,391
Hunter 28.5 Chesapeake Bay
Re: Re-pack in water

Bigstick:
Check your private message folder for a note from me on this topic.
 
Feb 26, 2004
23,003
Catalina 34 224 Maple Bay, BC, Canada
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