Originally Posted by rudaire
peculiar that the only two reported instances of this thus far are on the exact same year and model boat.. I'm going to chase the vent line, which I think I've seen when I pull the center floor panel, this weekend. I ran a tank from full to 3/16 and had no problem with engine performance in spite of the vacuum.. I assume you also haven't had engine troubles caused by this either??
It happens to my boat everytime I fill it up. I believe is is suction as opposed to pressure build up, but I guess I haven't explicitly checked. It can happen for quite a few seconds if I only undo the cap part way.
I haven't had any engine troubles caused by this. I usually only go from full to 1/2, but have been as low as 3/16 on occation without any problems.