Got my boat out for a test run today and it runs great except that after about 30 minutes of running about 75% throttle it overheated. Shut it off for 3 minutes and restart. immediately cooled down. Ran a bit longer and the temp was slowly climbing again and I stopped but didnt shut it down. I noticed at idle it looked like steam coming from behind the boat. It seems there is not enough flow through the motor But I cannot trace it. Heres what I did and a possible issue. Worth noting that the only change from this season to last is a new upper unit on the alpha one gen 2 drive.
First I disconnected the water lines from the power steering cooler and flushed it backwards. No restriction.
Next I connected the hose to the line there going to the motor and turned the hose on to look for leaks in the boat. (im getting water in the bilge and havent found the leak yet) No leaks, Water flowing through both exhaust ports on the back.
Next I connected the hose to the line going back to the drive and turned it on. Ive got water coming from the water pickup holes as well as from the front of the drive. My question here is whether it should all flow back through the water pickup holes or is it normal to leak out through the drive somewhere.
There are no flappers in the exhaust so that is not the problem.
No overheat issues last season and I ran this boat 40 miles offshore non stop.
Any ideas?
First I disconnected the water lines from the power steering cooler and flushed it backwards. No restriction.
Next I connected the hose to the line there going to the motor and turned the hose on to look for leaks in the boat. (im getting water in the bilge and havent found the leak yet) No leaks, Water flowing through both exhaust ports on the back.
Next I connected the hose to the line going back to the drive and turned it on. Ive got water coming from the water pickup holes as well as from the front of the drive. My question here is whether it should all flow back through the water pickup holes or is it normal to leak out through the drive somewhere.
There are no flappers in the exhaust so that is not the problem.
No overheat issues last season and I ran this boat 40 miles offshore non stop.
Any ideas?