If the 53 still has the in-cab tank it could be the sending unit gasket has failed and is allowing a bit of fuel to leak. It only takes a few drops of gas to stink up a cab. My 38 had a slight leak at a fuel pump fitting that caused the whole garage to smell of gas & it was such a slight leak that nothing ever hit the floor. I just happened to see a drop while working on that side of the engine once.


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Name your dog Naked so you can walk Naked in the park.