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#10951884 - 07/01/15 05:01 PM 225 hpdi water pressure
johnny123 Offline
Angler

Registered: 08/12/07
Posts: 392
Loc: Burleson, TX
Got a 05 225 hpdi. what should the water pressure be at when it is at idle and when running? I noticed at idle it was around 5 and when running it was around 10. Shouldn't it be more? Time for a impeller ?

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#10951944 - 07/01/15 05:30 PM Re: 225 hpdi water pressure [Re: johnny123]
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 908
Loc: bayou vista,tx
my 200 hpdi was 10 at idle and 25 when running at 3500 rpm. it dropped to 10 when running and on inspection, i found a kink in the line under the deck and another time i found a kink and leak. both times i replaced the entire line because it was brittle.
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#10952150 - 07/01/15 07:20 PM Re: 225 hpdi water pressure [Re: johnny123]
johnny123 Offline
Angler

Registered: 08/12/07
Posts: 392
Loc: Burleson, TX
I will trace the line down first to see if it's kinked. If I change the impeller do I need to change anything else like the housing or plate?

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#10952274 - 07/01/15 08:22 PM Re: 225 hpdi water pressure [Re: johnny123]
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 908
Loc: bayou vista,tx
get the kit and it will have everything you need. grease the impeller up real good and twist it into the bottom housing and be SURE the top housing is seated correctly before tightening down.
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#10952301 - 07/01/15 08:33 PM Re: 225 hpdi water pressure [Re: smooth move]
gary purdy Online   content
TFF Guru

Registered: 05/24/03
Posts: 10651
Loc: Littlefield Tx & Lake A. H. US...
Originally Posted By: smooth move
get the kit and it will have everything you need. grease the impeller up real good and twist it into the bottom housing and be SURE the top housing is seated correctly before tightening down.
Please do not put grease on the impeller or housing. Glycerin or soap. Petroleum base oils and greases shorten the life of impellers and I have noticed a gain in pressure 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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#10952432 - 07/01/15 09:36 PM Re: 225 hpdi water pressure [Re: johnny123]
johnny123 Offline
Angler

Registered: 08/12/07
Posts: 392
Loc: Burleson, TX
Thanks Gary for the tip, I had read about using the soap. I havnt had any alarms or lights go off yet. I will check that guage tube first and flush out and go from there.

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#10954251 - 07/02/15 07:04 PM Re: 225 hpdi water pressure [Re: gary purdy]
smooth move Offline
Pro Angler

Registered: 10/14/12
Posts: 908
Loc: bayou vista,tx
dang, 66 yrs old and about 20 outboards later i learned something new. i have always used vasoline on my impellers. i guess you're never too old to learn a new trick.
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