Diesel stench

Apr 27, 2013
18
Hunter 28 Henando Beach Yacht Club
I am the new owner of a 1998 Hunter 28 and the stench of the diesel on the cabin cushions is unbearable.:cry:- I will replace the cushions.
Question - is there a vent (blocked?) to discharge heat & fumes from the engine?
I hate to replace and then fumigate the new cushions.

Thanks.
 
Jan 4, 2006
7,297
Hunter 310 West Vancouver, B.C.
From what you describe, I'd be looking for a substantial fuel leak somewhere under the sole.

Once you've repaired the leak, I'd suggest removing all of the sole, letting the underside bake in the noon day sun and then scrubbing out the bilge area as best as possible.
 
Sep 25, 2008
7,474
Alden 50 Sarasota, Florida
Assuming no fuel leak, A properly operating diesel should not cause any smell inside the boat. My suggestion before replacing the foam is to ensure everything is tight and you have no fuel or exhaust leaks.

There are a number of home remedies to minimize the odor adsorbed in foam, none of which are 100% effective but I'd hate to read that you replaced them just to have the problem recur.
 
Dec 29, 2010
44
Catalina 30 tall rig waupoos
we had similar issue with our latest boat. If you can smell raw diesel it must be a leak. I finally tracked ours down to a pin hole on a lower rear seam of the aluminum fuel tank by removing the tank from the boat and pressurized it with air. We then removed everything from the boat and cleaned it, the cushions remained in the yard for a week, flipped often and only going into the shed when there was fear of rain. the hull was flooded with a high concentration of dish soap and rinsed. All is well now, lots of surplus got jettison in the process.
 
Apr 27, 2013
18
Hunter 28 Henando Beach Yacht Club
Thanks for all the suggestions.

I really believe the odor is exhaust, not raw diesel. Kinda like sitting next to a greyhound bus at a stop light and the cushions are permeated. They're so old that the zippers have deteriorated and cannot be unzipped to expose the foam.

Seems like I need start the engine and look (smell) for an exhaust leak. With someone to help if I become incapacitated for sure. Any suggestions on this?
 
Apr 27, 2013
18
Hunter 28 Henando Beach Yacht Club
Ps. I have been on 4 sailboats. 2, including mine, smelled like mine and the other 2 were completely odor free and a joy to be on.
 
Apr 27, 2013
18
Hunter 28 Henando Beach Yacht Club
Tried the Pureayre thanks. Didn't put a dent in the smell - too entrenched in all the cushions.
 
Nov 6, 2006
10,104
Hunter 34 Mandeville Louisiana
There are some past posts on diesel smell removal on the forum.. but the problem is that the diesel vapor has a big affinity for the foam and gets into the pores ..the solutions aren't 100% as Don suggested.. but the high labor one is to carefully take the foam out of the covers .. wash the foam in a detergent with a little Lysol ..really saturate the foam, as in a tub ..after squishing and agitating, use something like a rolling pin to mash out as much water as you can.. then put the foam in the sun until dry.. may take a few days. meanwhile carefully and gently hand wash the covers in laundry detergent.. then dry them in the sun. The most difficult part will be putting the foam back into the covers so it is all straight. Good Luck .. but as others have said, be really sure that all drips or drools of diesel and wisps of exhaust are completely eliminated before going through the pain of cleaning the foam and covers.
 
Jan 4, 2006
7,297
Hunter 310 West Vancouver, B.C.
If You Think it's Exhaust ...............

I really believe the odor is exhaust, not raw diesel. Kinda like sitting next to a greyhound bus at a stop light
............... there's also the danger of CO lurking about.

Maybe time to think about a CO monitor.
 
Apr 27, 2013
18
Hunter 28 Henando Beach Yacht Club
Roger that on the CO detector. Should also tell me if the fumes are coming from a keaking exhaust system - thanks for the tip.
 

Sailm8

.
Feb 21, 2008
1,750
Hunter 29.5 Punta Gorda
I to had the smell. Found some loose fuel line fittings and an exhaust leak at the elbow. It was just a pin hole but was enough to really stink up the boat.
 
Last edited:
Feb 26, 2004
23,074
Catalina 34 224 Maple Bay, BC, Canada
Good point. FWIW, there is a distinctly DIFFERENT smell from exhaust gases than from a fuel leak. Both are equally annoying, but different. If you had them both, I'm sure glad you traced them down.