"The fuel lines run under the trim on the driver side right?"

No. The fuel lines run under the car along the tranny hump with the brake lines.

In the older 240s they used metal fuel lines which eventually corroded, perforated and seeped. If you smell gas, run your hand along the lines and feel for dampness where the fuel is seeping through. The in-tank fuel pump also has a tendency to rust at its exit pipes.

Newer 240s use nylon line.

I replaced my lines with 5/16" copper tubing that doesn't rust. Even rebuilt the in-tank with 5/16" copper.
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1980 245 Canadian B21A with SU carb, M46 trans, 3:31 dif, in Brampton, Ont.