Over the years I’ve been plagued with an intermittent fuel smell in the trunk and in the cabin. It doesn’t bother me that much (well maybe a little) but my wife goes into her high drama mode … grabbing her throat and rolling out of the the car gasping for air (but actually she does have a great sense of humor ).
I’ve pulled the tank out twice over the years and it’s been in perfect condition. Not a trace of corrosion on the outside and nothing I can see on the inside with a long borescope. Both times though it appeared there was a very small stain around the top hat … On my '89 with the external fuel pump the fuel tank has a small metal dome on the top, fittingly called the … top hat
Both times I’ve removed the tank and had the area around the “top hat” resoldered with good results …
SO THE QUESTION BEING … is anyone familiar with my fuel tank vent system and how it actually works? The charcoal canister has several check valves and is vacuum actuated, but before I get down and dirty with it I wonder if anyone has already been there.
Again remember it’s an '89 with an external fuel pump.