No help on the fuel line, sorry.
Read a great article from In-Fisherman archive 2014. I goggled water temps Crappies spawn at. Wish I could figure out how to cut n paste on mobile. Basically, fish go into shallows after first ice out until the water hits high 50s. These fish are not spawing when they are in all those shallows bays or weedbeds.. I.E.. Pymie @ Wislon, Padanaram or Stewart's, MC at Arthur or any other place we have been getting them this time of year. This is a common mistake in thought. They will then move to spawing areas, males first, at around 60. Its all over at 70 degrees