Merc 140 1984 vintage has a clear plastic tube to<br />air horn from fuel pump/filter.<br />It had gunk in it from storage but doesnt seem to have anything new flowing in it now that the<br />boat has come out of 15 years of storage.<br />Will a fuel pump deteriorate just sitting with gas in it?<br />What would I be looking for oil or gas?<br />If this tube is ok now does that mean everything is ok?<br />Thanks in advance