Temp gauge

[Kilowatts]

Curious what temperature other boats temp gauge reads when at 4500 rpm. I noticed coming in last Saturday that when trolling around the temp gauge stays right in the middle of the range but with higher rpm it reads a little higher at the 3/4 position. I would expect it to climb but not familiar with the yamaha digital gauges. I'm used to seeing the actual temp on the older style gauges.

 

[Angus]

Hey Kilo, not sure i will help, but i was out trolling last week, have the yamaha gauges and it stayed right in the middle. When I decided to move out after trolling for about three hours, picked up speed to over 4000 RPM's she did not change. 225 Yamaha. Thanks!

 

[DaleH]

It shouldn't climb at all ... it should drop ...

 

[Brent]

How old are the thermostats? They are easy to replace and should be done regularly

 

[DaleH]

FYI, Yams are VERY sensitive to proper operation of the poppet valves, for if they aren't "pushed" out of the way for higher speed RPMs, then - yes, your temps could climb.

Typical t-stats should open once planing speed is achieved, but a faulty p-valve can inhibit the flow path of cooling water. Somewhere on here our own TomS wrote a post on servicing the stupid Yam poppet valves ... as no other OB Mfg'r has a problem with them, if used at all in the 1st place.

 

[Brent]

SIM Yamaha has a tutorial on replacing it on their web site
I think the part was $60 for a 02 F225 and easy to replace

 

[Brent]

F225 poppet valve replacement guide


http://www.simyamaha.com/category_s/1987.htm

 

[Kilowatts]

Thank for the help! I will be doing some order now.

 

[Kilowatts]

F225 poppet valve replacement guide


http://www.simyamaha.com/category_s/1987.htm

Can't this link to work. I ordered the PVC valve and thermostat. Is there a link that works?

 

[Brent]

F225 poppet valve replacement guide


http://www.simyamaha.com/category_s/1987.htm

I just checked and it works

here another one

http://www.simyamaha.com/category_s/1985.htm

you should explore the site
http://www.simyamaha.com/

 

[miky2884]

I didnt know Yamaha had a digital temp gauge??????