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Murcury 200 hp Water Presure
#13566054
05/21/20 12:24 PM
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Joined: Apr 2011
Posts: 520
Costa Plente
OP
Pro Angler
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OP
Pro Angler
Joined: Apr 2011
Posts: 520 |
What can cause low water pressure ? I have only 10psi when I am at 4500rpm running down the lake.
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Re: Murcury 200 hp Water Presure
[Re: Costa Plente]
#13566136
05/21/20 01:22 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 |
Week impeller, water pump housing needs replaced too, poppet valve weak or valve leaking. Best advice I can give you is to check the gauge first, then replace complete water pump, complete poppet assembly and both thermostats. .
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: Murcury 200 hp Water Presure
[Re: Costa Plente]
#13567291
05/22/20 11:58 AM
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Joined: Apr 2011
Posts: 520
Costa Plente
OP
Pro Angler
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OP
Pro Angler
Joined: Apr 2011
Posts: 520 |
So what your saying is that even though the motor has a strong peeing flow at the Idle but low water pressure while on plane trimmed and running down the lake that it's the impeller.
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Re: Murcury 200 hp Water Presure
[Re: Costa Plente]
#13567346
05/22/20 12:47 PM
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Joined: Aug 2002
Posts: 2,044
DLALLDER
Extreme Angler
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Extreme Angler
Joined: Aug 2002
Posts: 2,044 |
So what your saying is that even though the motor has a strong peeing flow at the Idle but low water pressure while on plane trimmed and running down the lake that it's the impeller. Costa,, I AM NOT A OUTBOARD MECHANIC but I have a 2000 200hp Merc. I have had the same symptoms for the 10-12 years that I have owned the rig. Impeller normally get changed out at 2 years intervals. Even with new impeller gauge pressure is the same about 10 lbs at 3000 to 3500 rpm. I believe the gauge is INCORRECT. Like you said good peeing at idle with only about 1-2 lbs showing. Long story short I have quit worrying about it. Daniel
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Re: Murcury 200 hp Water Presure
[Re: Costa Plente]
#13567431
05/22/20 01:50 PM
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Joined: Nov 2006
Posts: 2,848
TLW
Extreme Angler
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Extreme Angler
Joined: Nov 2006
Posts: 2,848 |
What can cause low water pressure ? I have only 10psi when I am at 4500rpm running down the lake. has it always been this way?.. did it decrease (if that applies) all of a sudden or over time?.. has tha buzzer ever went off?..........
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Re: Murcury 200 hp Water Presure
[Re: Costa Plente]
#13567539
05/22/20 03:07 PM
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Joined: Jan 2005
Posts: 17,017
Pat Goff
TFF Guru
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TFF Guru
Joined: Jan 2005
Posts: 17,017 |
The water pressure gauge is a tube that runs from your engine to your dash. Tubes can kinked, blocked, piece of sand can get wedged.
Before you start on anything else, take your cowling off, and inspect that tube from the motor to the gauge. I'll wager you have a leak or blockage.
Pat Goff Seadrift TX
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Re: Murcury 200 hp Water Presure
[Re: Costa Plente]
#13568020
05/22/20 09:26 PM
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Joined: Apr 2011
Posts: 520
Costa Plente
OP
Pro Angler
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OP
Pro Angler
Joined: Apr 2011
Posts: 520 |
I just bought the boat so I can't tell you what it did in the past. Talked to the prior owner and was told the impelled was changed about three years ago so I will be changing it soon. The motor has a smart gauge on it and the temp reading is fine so maybe it is will be alright after I change the impeller. It could be the way Daniel said and I just quit worrying about it as long as it's peeing good and the temp isn't too high.
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Re: Murcury 200 hp Water Presure
[Re: Costa Plente]
#13572240
05/27/20 12:35 AM
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Joined: Nov 2007
Posts: 5,521
ssmith
TFF Celebrity
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TFF Celebrity
Joined: Nov 2007
Posts: 5,521 |
water pump kits are cheap compared to losing a powerhead an 3 years is too long without one.
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