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#11836763 - 09/19/16 09:11 AM Overheating 06Yahama 250 Hpdi
H-D Dad Offline
Angler

Registered: 02/26/11
Posts: 400
Loc: Baytown TX
After idling for a few minutes, then trying to get on plane the overheat alarm will sound. If I put it in neutral and rev it to about 1500 rpm for a few seconds, that seems to cool it enough to get on plane. It looks to be about 8 psi on plane. I suspect some type of water pressure problem.
I replaced the impelled with no change in the problem. Any help would be appreciated.
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Wes

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#11837330 - 09/19/16 01:34 PM Re: Overheating 06Yahama 250 Hpdi [Re: H-D Dad]
ssmith Offline
Extreme Angler

Registered: 11/22/07
Posts: 2594
Loc: scotland tx
check the poppet valve if it has not been serviced.

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#11837389 - 09/19/16 02:02 PM Re: Overheating 06Yahama 250 Hpdi [Re: H-D Dad]
H-D Dad Offline
Angler

Registered: 02/26/11
Posts: 400
Loc: Baytown TX
I am working on that right now. Trying to get all of the parts. I am not sure if that rubber piece comes out of the cylinder block or not. Can anyone help me with that
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Wes

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#11837453 - 09/19/16 02:32 PM Re: Overheating 06Yahama 250 Hpdi [Re: H-D Dad]
ssmith Offline
Extreme Angler

Registered: 11/22/07
Posts: 2594
Loc: scotland tx
yes it comes out it would be included with the spring an plunger.

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#11837468 - 09/19/16 02:38 PM Re: Overheating 06Yahama 250 Hpdi [Re: H-D Dad]
H-D Dad Offline
Angler

Registered: 02/26/11
Posts: 400
Loc: Baytown TX
Ok Thanks
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Wes

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#11838178 - 09/19/16 08:33 PM Re: Overheating 06Yahama 250 Hpdi [Re: H-D Dad]
H-D Dad Offline
Angler

Registered: 02/26/11
Posts: 400
Loc: Baytown TX
Got her going. 12 psi at 3500 rpms. Thanks sssmith for your help. Maybe I will make this part of annual service or at a minimum every 2 yrs.
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Wes

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#11838612 - 09/20/16 06:49 AM Re: Overheating 06Yahama 250 Hpdi [Re: H-D Dad]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 10858
Loc: Littlefield Tx & Lake A. H. US...
I would order the improved poppet assembly. You need to service your thermostats too.
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“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” GOD IS GOOD

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