[jclark003]

I doubt if your engines lost prime while sitting over the winter, unless you changed fuel filters during your layup.

It hurts nothing to prime them a bit regardless. I usually give the priming pump a couple pumps before launching just to make sure it builds pressure right away.

If you haven’t used the priming pump in a long time however, I would leave it alone. I’ve seen pumps start leaking air when used after a long (multi-year) dormancy.