I picked up a 99 8hp 2stroke recently and got it running and starting fine but I'm having a problem with water not pumping. After replacing the t-stat and a new pump kit it started pumping right away and that lasted for a couple of minutes before it went down to dribble then stopped and was just pumping hot air/steam out the telltail hole. I thought it may be a blockage from calcium deposits so I tore everything apart and made sure all passages were clear and water could flow through.
Just for kicks I took the lower unit with a cordless on the shaft and submerged that in a tub of water and when I spin the shaft no water is pumped out the top of the impeller housing. Took that apart again and all the new parts are intact and in good shape. The impeller is located on the woodruff key as it should and spins with the shaft properly. Also the passage for the water to go up from the pick ups on the lower unit to the pump are clear and clean.
I'm stumped and can't figure this sucker out.
Please help!!
Just for kicks I took the lower unit with a cordless on the shaft and submerged that in a tub of water and when I spin the shaft no water is pumped out the top of the impeller housing. Took that apart again and all the new parts are intact and in good shape. The impeller is located on the woodruff key as it should and spins with the shaft properly. Also the passage for the water to go up from the pick ups on the lower unit to the pump are clear and clean.
I'm stumped and can't figure this sucker out.
Please help!!