 Fuel filler rust |
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| Amphicar770 |
 Jun 10 2025, 03:38 PM
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#1
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Senior Member  Group: Members Posts: 1,218 Joined: 20-April 10 From: PA, USA Member No.: 11,639 Region Association: MidAtlantic Region 
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A few years back, before repro units were available, I had my tank restored with a process called Gas tank Renu. At the same time, I had the fuel filler assembly blasted and powder coated.
Last week, as I went to add fuel for first Summer jaunt, I noticed lots of rust and flaking in the fuel filler neck. I just removed that as I was also concerned if tank sealant had failed. Good news is that the tank sealant remains rock hard. Bad news is that The filler is worse than I first noticed. I will definitely need to clean out some of the crud from that which is now in the tank. I think the fuel cap spring may not have helped the filler neck coating. Is the spring even needed? Attached are photos of filler assembly. I can blast it again, but then what? Should I try having it powder coated again, perhaps it was done poorly last time. Should I instead paint it with an epoxy based paint? Other?   |
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| BillC |
Jun 10 2025, 03:58 PM
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#2
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Senior Member Group: Members Posts: 664 Joined: 24-April 15 From: Silver Spring, MD Member No.: 18,667 Region Association: MidAtlantic Region
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QUOTE(Amphicar770 @ Jun 10 2025, 05:38 PM)  A few years back, before repro units were available, I had my tank restored with a process called Gas tank Renu. At the same time, I had the fuel filler assembly blasted and powder coated. Last week, as I went to add fuel for first Summer jaunt, I noticed lots of rust and flaking in the fuel filler neck. I just removed that as I was also concerned if tank sealant had failed. Good news is that the tank sealant remains rock hard. Bad news is that The filler is worse than I first noticed. I will definitely need to clean out some of the crud from that which is now in the tank. I think the fuel cap spring may not have helped the filler neck coating. Is the spring even needed? Attached are photos of filler assembly. I can blast it again, but then what? Should I try having it powder coated again, perhaps it was done poorly last time. Should I instead paint it with an epoxy based paint? Other? It's possible the gas fumes damaged the powder coat. If you blast it again, maybe try paint instead? Also, did you put a new gasket between the filler and the tank? |
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| Root_Werks |
Jun 13 2025, 03:05 PM
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#3
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Village Idiot Group: Members Posts: 8,710 Joined: 25-May 04 From: About 5NM from Canada Member No.: 2,105 Region Association: Pacific Northwest
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Oh boy, you can tell the fuel ate away the powder coating.
(IMG:style_emoticons/default/agree.gif) Would get that blasted again and just use some regular paint that holds up against fuel. |
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| dtmehall |
Jun 13 2025, 09:02 PM
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#4
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Member Group: Members Posts: 125 Joined: 21-December 23 From: Farmington Hills, Michigan Member No.: 27,808 Region Association: Upper MidWest |
here's an off the wall question
do you use pure ethanol fuel? |
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