Fuel tank first look.

[jw]

John G,
I have a 74 20CC I/O That was the same way. I also removed the tank hatch, which the coring fell apart, replaced all the fuel hoses, vent fill and gas line to engine. I also replaced the sending unit which was leaking. After all that No more fuel stink, but then the oil pan failed on the engine, getting fixed now.
When I recored all of the hatches I used a 1/2 inch composite renforced foam. Laminated to the old hatch covers with MAS expoy, then i put a Triaxial glass over the foam, and gelcoated the bottoms. I used the composite"COOSA" due to light weight and will never rot out or absorb water. Plus you can put screws in it .
This system worked out well for me and was accomplished in about a week, and a cost of $300.00.
I did not change my tank as My boat was not in service much of its life. It sat on a trailer in a shed for the last eight years. I do not think , judging from the engine compression, that it has more than 200hours on it.
Good luck, Its a great boat.
JW [img]images/icons/grin.gif[/img]