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					Originally Posted by  Digger_Bear
					 
				 
				Quick update my friend fitted new tank and that leaks as well. He's since got the first tank welded up so hopefully that has fixed the problem. 
			
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 After your friend replaced a new tank where is the leak located? You can test it by removing the breather and seal it with a 3mm screw then run the pump to see where the leak comes from. I guess the leak comes from the pump and not the tank.