Re: Nissan 9.8 priming problem
In my experience, you had a sticky float needle. Yes, the Unikas filters work very well; we sell ots of them, and I have one on my Nissan 9.8A3. If the float/needle starts to do that habitually, it's time to pull the carb and clean it well, and possibly install a new needle.
Paul Van Voorhees
Certified Tohatsu TLDI Technician
Mgr, Obersheimer Sails
Buffalo, NY USA