Tohatsu 8hp low water flow

Irie308

Well-Known Member
May 28, 2013
2,599
CT
Boat Info
2004 420 DB, GHS Hydraulic Lift
Garmin 8600/Garmin 1222 plus
AB Mares 10 VSX with 30 hp Tohatsu
Engines
Cummins 450C 8.3 L Turbocharged
We were out running around in the dinghy this past weekend and i noticed that the cooling water flow was not the usual jet/stream of water as last season. The power of the stream is the same at WOT as it is at idle (little more than a trickle). Wondering it its a a clog, impeller or pump. Any thoughts as to where to start my troubleshooting?
 
Try pushing something into the outlet hole. I use a small gauge wire. Sometimes its salt build up
 
is the water temperature hot? How old is the impeller

Didn't feel it for temp but the impeller is on its 3rd season.
 
I had a similar problem with my 6hp yammy. I just held a hose on the outlet and back flushed it - cleared it in seconds.
 

Forum statistics

Threads
113,193
Messages
1,428,278
Members
61,104
Latest member
Three Amigos
Back
Top