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#12354126 - 07/23/17 08:31 AM Overheating Yamaha
Hog Jaw Offline
Extreme Angler

Registered: 06/09/08
Posts: 2276
Loc: The Great State of Texas
Anyone having problems overheating with 90 degree water

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#12354176 - 07/23/17 09:07 AM Re: Overheating Yamaha [Re: Hog Jaw]
beartrap Offline
Pro Angler

Registered: 11/05/11
Posts: 759
Loc: south georgia
90 degree water is probably not your problem....how long since you changed out water pump?

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#12354206 - 07/23/17 09:32 AM Re: Overheating Yamaha [Re: Hog Jaw]
JoeFriday Offline
Pro Angler

Registered: 05/23/13
Posts: 865
Loc: Flower Mound, TX
Impeller, thermostats, and/or poppet valve. Likely one or a combination. Only other cause would be an obstruction in water flow somewhere.
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#12354214 - 07/23/17 09:39 AM Re: Overheating Yamaha [Re: Hog Jaw]
Frank the Tank Online   content
TFF Guru

Registered: 02/27/13
Posts: 21797
Loc: Rockwall & a lake somewhere
^^^^^ this
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#12354258 - 07/23/17 10:27 AM Re: Overheating Yamaha [Re: Hog Jaw]
bigbass94 Offline
TFF Team Angler

Registered: 05/27/12
Posts: 4041
Loc: San Antonio, Texas
Never had a problem with something like that. Hope you get it figured out.
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#12354312 - 07/23/17 11:16 AM Re: Overheating Yamaha [Re: Hog Jaw]
miketmpb Offline
Green Horn

Registered: 08/15/15
Posts: 5
Had same problem, it was a water pump problem, 200 bucks

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#12354412 - 07/23/17 12:49 PM Re: Overheating Yamaha [Re: miketmpb]
scottsoutdoorworld Offline
Pro Angler

Registered: 01/04/09
Posts: 502
Loc: new summerfield tx
if it only does it when you are idling around you have sand and small rocks in the poppet valve and need to clean it if it does it running on plane water pump or t-stats


Edited by scottsoutdoorworld (07/23/17 12:49 PM)
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#12354497 - 07/23/17 02:08 PM Re: Overheating Yamaha [Re: miketmpb]
Fish Killer Online   happy
Big Sexy

Registered: 12/11/04
Posts: 25779
Loc: Weatherford
Originally Posted By: miketmpb
Had same problem, it was a water pump problem, 200 bucks


2 bills??

Takes 30-45 min and the kit is 75 bucks
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#12354498 - 07/23/17 02:09 PM Re: Overheating Yamaha [Re: Hog Jaw]
reeltexan Offline
Extreme Angler

Registered: 03/03/06
Posts: 2390
Loc: Ovilla, TEXAS

You might ask in the Equipment Discussion forum.
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#12354634 - 07/23/17 04:04 PM Re: Overheating Yamaha [Re: Fish Killer]
Andrew Y'Barbo Offline
Extreme Angler

Registered: 06/25/12
Posts: 1372
Loc: Lufkin Texas
Originally Posted By: Fish Killer
Originally Posted By: miketmpb
Had same problem, it was a water pump problem, 200 bucks


2 bills??

Takes 30-45 min and the kit is 75 bucks


More like an hour of labor. 120$ plus parts. He was correct at couple a bills.

Make sure the plastic screens on the Loweunit are not broke. This will cause em to overheat running.

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#12354698 - 07/23/17 05:04 PM Re: Overheating Yamaha [Re: Hog Jaw]
stetson Offline
Angler

Registered: 03/31/14
Posts: 407
Who doesn't replace the water pump themselves?!
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#12354821 - 07/23/17 06:51 PM Re: Overheating Yamaha [Re: Hog Jaw]
lodell23 Offline
Pro Angler

Registered: 03/12/14
Posts: 656
Loc: Denton TX
Replace the water pump. Super easy. Takes 30 min on a merc, not sure on yamaha

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#12355034 - 07/23/17 09:42 PM Re: Overheating Yamaha [Re: Hog Jaw]
leethefishking Online   content
Extreme Angler

Registered: 05/24/02
Posts: 1164
Loc: San Marcos, TX
On a 90 or 115 easy to replace yourself. On a 250 much more difficult if you don't have help. Sounds like water pump to me. Do you have a water pressure guage?

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#12355364 - 07/24/17 08:16 AM Re: Overheating Yamaha [Re: leethefishking]
JoeFriday Offline
Pro Angler

Registered: 05/23/13
Posts: 865
Loc: Flower Mound, TX
Originally Posted By: leethefishking
On a 90 or 115 easy to replace yourself. On a 250 much more difficult if you don't have help. Sounds like water pump to me. Do you have a water pressure guage?


Pulling the prop helps on the bigger motors. I do a 200 solo, and it's not too bad.
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#12355432 - 07/24/17 08:52 AM Re: Overheating Yamaha [Re: Hog Jaw]
buda13 Offline


Registered: 07/02/04
Posts: 17901
Loc: NRH, TX
Originally Posted By: Hog Jaw
Anyone having problems overheating with 90 degree water


What year and model engine? OX66? HPDI? Vmax? Had something similar happen to me after idling through a silted area, sucked a bunch of that into the water jacket and restricted the water flow.
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