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Stuff in fuel tank

mastin1

New member
I just spent $500 having the carburetors on my 90 hp Mercury rebuilt. The issue was a white substance that was in my fuel tank. I'm trying to figure out what the heck it is. It has to come from a filling station since that is the only place I have every gotten gas. Take a look of the pictures of the inside of my gas tank and tell me if you have any ideas what this is so it doesn't happen again.

Thanks
 

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welcome to the ethanol world...if its a portable tank then i would trash it...if its a built in and you wish to use it then it will have to be cleaned out if you can get into it enough...it was probably cause by old gas in the tank....when you clean or replace the tank also replace all the hoses and filters etc...ethanol will not store well..especially untreated...it dont like air...when you store the boat either do it with dry tank(s) or with the tanks topped off with treated fuel..there are all kind of videos on the web explaining what happens so i will not go into details..
 
Ayuh,.... That's what fuel Filters are for,....

Plumb in a canister type filter, 'tween the tank, 'n fuel pump,....
 
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