Newbie, Gas tank repair

[Tom7745]

Hi
Committed the cardinal sin and bought a boat without test driving, dumb dumb dumb !
The under floor gas tank was not being used, they had a 6 gal Jerry jug.
Not sure how to troubleshoot the tank, but would like to use it instead of 2 12 gal externall tanks.
So, I'm not sure if it is broken, how to test the tank, pickup etc etc,any help would be appreciated.
I repaired the wiring carbs and tllt trim motor last year.....

Thx in advance for the assistance!

 

[HONKER1]

Re: Newbie, Gas tank repair

I Would Do A Search On Aluminum Fuel Tanks. My Guess Is The Tank Has A Hole In It. I Would Think You Could Air Test It And That Would Answer That Question.
Also If It Hasn't Been Used For Some Time, You Will Need To Get The Varnish Out And Use Some Good Filters For A While.

 

[Tom7745]

Re: Newbie, Gas tank repair

Thanks for the help.
How do you actually test the tank?
would you remove it, then seal he vent and attach some sort of air hose to the Gas input?

 

[HONKER1]

Re: Newbie, Gas tank repair

I wouldn't necessarily think you have to remove the tank, as long as you can plug all the openings except the 3/8" vent. You wouldn't need very much air pressure, I would guess about 5 pounds with a good calibrated gauge. If there is a leak, the air pressure would drop fairly fast.
To clean the tank is another issue. It would be easier if the tank was out, but if the tank leaks, way bother, unless you plan on putting in a new tank.