Yamaha 115 Water Pump Intermittantly Working????

whitestar

Cadet
Joined
Jul 30, 2007
Messages
10
Last season I replaced water pump and worked fine. Just this Sat. pulling away from mooring thru anchorage area (4 mph), the buzzer goes off. I had a fairly good tell-tale stream too.
I shut off the motor for a minute...re-started and all was fine.
Same thing happened last night...this time after appx. 30 minutes of running 3000 rpm....went over a reef....strong rip water area....after passing the rip back onto smooth water...the buzzer goes off again.
I shut down for 30 secs. and all was fine for the ride home.
Okay...here's my concern. After the buzzer goes off, it supposed to take appx. 20-25 mins for the engine to cool down before the starting circuit will work. Why am I able to immediately re-start after buzzer goes off?
Thermostats tested well in June (they are 3 years old). Is there a pressure sensor in the power head causing this??
 

Ray Neudecker

Lieutenant Commander
Joined
May 25, 2004
Messages
1,656
Re: Yamaha 115 Water Pump Intermittantly Working????

The overhaet sytem does not prevent you from restarting the engine. Time to check the popit valve.
 

whitestar

Cadet
Joined
Jul 30, 2007
Messages
10
Re: Yamaha 115 Water Pump Intermittantly Working????

What is the technical name for the popit valve? And where is it located on the engine?? Thanks!
 
Top