I have had this motor 3 or 4 years, Mariner 3 cyl 90 hp, OB229356. I put a impeller and lower seal kit on right away. I launched only once this year and it run fine, I mean really fine. Water squirted normal from the indicator tube. Yesterday I dragged it out on the drive way to fog it. I attached the muffs, ran the water sufficient to splash about, started after normal choking and saw no water stream from the tube. Alarmed I immediately shut down, pushed a wire into the tube, then ran some compressed air into same. Air rushed out the lower vents. Looks like I need a new impeller and to clean the water tube of any spider webs next spring. Other possibilities?