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Fluctuating water pressure gauge.
#12006032
12/27/16 06:50 PM
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Joined: Feb 2015
Posts: 464
OneFishAway
OP
Angler
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OP
Angler
Joined: Feb 2015
Posts: 464 |
I have a 05 Yamaha HPDI 175. Today I noticed my water pressure gauge fluctuating. Never notice it before. No overheating or anything. Any ideas? Thanks in advance. BTW this was noticed at WOT.
Last edited by OneFishAway; 12/27/16 06:56 PM.
PB 9.25 Benbrook
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Re: Fluctuating water pressure gauge.
[Re: OneFishAway]
#12006046
12/27/16 07:02 PM
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Joined: Oct 2007
Posts: 19,756
Huckleberry
TFF Guru
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TFF Guru
Joined: Oct 2007
Posts: 19,756 |
Could be your thermostat going bad. I had to replace one this weekend myself. Mine was doing it at low idle speeds, buzzer went off one time, my smart craft told me it was my thermostat, that's how I knew.
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Re: Fluctuating water pressure gauge.
[Re: OneFishAway]
#12006056
12/27/16 07:08 PM
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Joined: Feb 2015
Posts: 464
OneFishAway
OP
Angler
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OP
Angler
Joined: Feb 2015
Posts: 464 |
Ok that shouldn't be too bad. It would fluctuate between 18 and 25 psi. Was also a little slow to come up after getting into the throttle.
PB 9.25 Benbrook
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Re: Fluctuating water pressure gauge.
[Re: OneFishAway]
#12007375
12/28/16 05:57 PM
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Joined: Mar 2007
Posts: 16,323
forkduc
TFF Guru
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TFF Guru
Joined: Mar 2007
Posts: 16,323 |
Check your intake screens first.
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Re: Fluctuating water pressure gauge.
[Re: OneFishAway]
#12007614
12/28/16 08:44 PM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
Poppet valve assembly needs cleaned or changed.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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Re: Fluctuating water pressure gauge.
[Re: OneFishAway]
#12022624
01/05/17 10:35 PM
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Joined: Aug 2016
Posts: 35
2jmills
Outdoorsman
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Outdoorsman
Joined: Aug 2016
Posts: 35 |
I have a 2002 OX66 225 and the pressure gauge never goes below 20 psi with the motor not running. When on plane it shows 60 psi. Any ideas?
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Re: Fluctuating water pressure gauge.
[Re: 2jmills]
#12025262
01/07/17 02:35 AM
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Joined: Jun 2004
Posts: 1,509
OPTI
Extreme Angler
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Extreme Angler
Joined: Jun 2004
Posts: 1,509 |
More than likely with the cold weather the gauge has frozen from trapped water in the gauge, see it alot this time of year and only solution is to replace the gauge. Or to I have seen if you remove the line from the back of gauge and it drops to zero there is a restriction in the line from the motor to the gauge if that the case find the restriction or just run a new line.....OPTI
Last edited by OPTI; 01/07/17 02:35 AM.
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Re: Fluctuating water pressure gauge.
[Re: OneFishAway]
#12025270
01/07/17 02:41 AM
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Joined: Jun 2004
Posts: 1,509
OPTI
Extreme Angler
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Extreme Angler
Joined: Jun 2004
Posts: 1,509 |
Like Gary mentioned check the poppet valve could have trash in the grommet or the poppet valve spring is weak and not strong enough to hold the water in the block and pops off at a lower pressure or the poppet valve it self is worn and not sealing against the grommet.....OPTI
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Re: Fluctuating water pressure gauge.
[Re: OneFishAway]
#12025921
01/07/17 03:06 PM
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Joined: May 2003
Posts: 11,586
gary purdy
TFF Guru
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TFF Guru
Joined: May 2003
Posts: 11,586 |
Tip during the cold weather. Disconnect the hose for the water pressure gauge and pour in a little RV antifreeze and re-connect. Enough will remain to prevent the gauge from freezing all winter.
The world will not be destroyed by those who do evil, but by those who watch them without doing anything. Remember what He has done and remember that He is not done yet!-- GOD IS GOOD
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Re: Fluctuating water pressure gauge.
[Re: OneFishAway]
#12063722
01/28/17 02:26 AM
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Joined: May 2014
Posts: 394
Hittmanfish
Angler
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Angler
Joined: May 2014
Posts: 394 |
Where is a good place to buy replacement gauges?
I'm having a similar issue where my water pressure gauge is showing 25 PSI at idle and doesn't go below that when running. My trim gauge isn't working either, so I guess I might as well replace that too.
Madison Hitt
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Re: Fluctuating water pressure gauge.
[Re: Hittmanfish]
#12063748
01/28/17 02:39 AM
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Joined: Jun 2009
Posts: 2,008
fordnut
Extreme Angler
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Extreme Angler
Joined: Jun 2009
Posts: 2,008 |
I bought replacements for mine on EBay.
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