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Old 09-18-2021, 06:19 PM   #1
City: San Diego
Vessel Model: 42' CHB Ponderosa
Join Date: Apr 2014
Posts: 10
Fuel leak

I have a 1986 CHB 42' Ponderosa Aft Cabin trawler that has a fuel tank leak into the bilge and we had to drain the starboard fuel tank. The fuel tank needs repair and Iím not sure what procedure to follow. Any suggestions would be greatlyappreciated. Thank you.
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Old 09-18-2021, 07:56 PM   #2
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City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 13,881
What are the tanks made out of, black iron? What is the accessibility? Does the tank have access ports in it? Where is the leak, high or low on the tank? Can you see the leak or is it hidden?

It would help if you can give us more info to deal with. The best thing to do would be to replace the tank. Maybe also the most expensive thing to do. However that may be the solution that needs to be done. There are countless threads here on tank leaks and replacement. There are so many variations on what to do. You can replace the tank or you can try to repair the tank. Some repairs are successful some are not.
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Old 09-18-2021, 08:10 PM   #3
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City: Bellingham
Vessel Name: Knot Hours
Vessel Model: Hatteras 58 LRC
Join Date: Feb 2019
Posts: 153
If they're metal you may be able to weld a patch on the leaking area if you can get to it. There are serious risks that have to be mitigated, like emptying the tank completely and emptying and drying out the tank, protecting everything else around it, etc.

I've heard some people insert a rubber bladder into a leaking tank. It fills the tank to approximately the same size/capacity.

If it's a fiberglass tank I'm not sure if it can be repaired or not. I have no experience with that, but I imagine diesel saturated fiberglass might make it hard for new fiberglass to adhere and seal.

I would think plastic tanks would be easy enough to repair (though, again, I'm not speaking from experience). There are some effective glues, or you might be able to use heat.

Good luck, and let us know what you end up doing.
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Old 09-18-2021, 09:10 PM   #4
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City: Southport, FL near Panama City
Vessel Name: FROLIC
Vessel Model: Mainship 30 Pilot II since 2015. GB-42 1986-2015. Former Unlimited Tonnage Master
Join Date: Oct 2007
Posts: 4,005
I have participated in old black iron tank replacement with multiple aluminum tanks in a trawler and have also read countless accounts here over the years of how people accomplished the repair and/or replacement. I can only suggest you do a search here and consult with local mechanical talent to formulate your plan.
Rich Gano
FROLIC (2005 MainShip 30 Pilot II)
Panama City area
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Old 09-18-2021, 10:03 PM   #5
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City: Long Beach, CA
Vessel Name: Aquarius
Vessel Model: Californian 55 CPMY
Join Date: May 2018
Posts: 393
Call Larry at American Fuel Tanks in La Mesa. He did mine and my brothers boat as well. That is his specialty. 619-253-7035
Aquarius 1991 Californian 55 CPMY Long Beach CA
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