what is the solution for this? I did this tank seal about 2 years ago.
POR-15 bubbling up, soft and flakey
View attachment 45466
POR-15 bubbling up, soft and flakey
View attachment 45466
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POR-15 failure inside gas tank
- Thread starter Andrew Vanis
- Start date
G
Guest
Guest
Yep. Bad prep leads to poor performance
R
raygun
Guest
Could that be damage from the fuel nozzle while refueling? Looks like it's right at the gas cap.
Ive never done it, but could that area be cut out with an Exacto knife and scraped off, some evaporust or whatever to derust that spot again, and brush some more sealer on as a patch job work??? Dont know if it will rebond to itself again or not and make a good seal would be my issue.
G
Guest
Guest
Your petcock has a filter on it. I wouldn't worry much, I'd just run it. Like has been said it hell to remove and doubt it can be touched up properly. Pull your petcock once a year and keep an eye on the offending area (and the rest of the tank) and don't sweat it. In the meantime try and source yourself a used tank for down the road
I would not be surprised if that is not rust that came through the backside. It looks more like rust growth from below the coating than actual failure of the coating. Rust can not grow without oxygen and Por-15 is an effective block to air, but it can't stop rust growing in from behind.
I like Por-15 products for the most part, but I believe their marketing and instructions are misleading for many products. For example, they mislead people to believe that all you have to do is soak the rust in their phosphate sauce for a few mins and then you can seal right over the top. The idea is that by sealing off oxygen the rust will stop, however in my experience this is a risky approach. It's much better to soak the rust in the phosphate until all the visible rust is gone, and then seal over the surface.
more than a week
