[T2] Gas fumes

[John Sheldon]

I replaced the 1800 engine on my 74 bus over the winter.  Had someone smarter than I am overhaul the carbureters.  All is tight - no visible leaks but when I put it in the garage after a drive, there is a big time gas smell throughout the garage and you can smell it in the house.  

Could it be from tank ?  

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