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NEED HELP ON MERC WATER PUMP 150EFI (FIXED) thanks #4654067 03/25/10 05:14 PM
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Chuckie Offline OP
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I changed the water pump and it shows 10 on the gauge but no water from weep hole. I speeded the motor up and it comes out strong but it surges on and off what do i need to do HELP

Last edited by Chuckie; 03/25/10 06:24 PM.
Re: NEED HELP ON MERC WATER PUMP 150EFI [Re: Chuckie] #4654114 03/25/10 05:22 PM
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Is it 10 at idle or WOT?


2200 Bay Champ/200 Mercury Optimax
2017 Tundra TSS 4x4 Crewmax 5.7L
Re: NEED HELP ON MERC WATER PUMP 150EFI [Re: Stump jumper] #4654161 03/25/10 05:31 PM
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Chuckie Offline OP
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I think it was that at about 1500 rpm

Re: NEED HELP ON MERC WATER PUMP 150EFI [Re: Chuckie] #4654605 03/25/10 06:48 PM
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the thermostat is doing that 10 psi at that rpm is good look at the exhaust relief on the back when your running on your earmuffs and you should see water coming out the relief holes

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