2003 tohatsu 90 tldi - where does water pressure hose go on motor side?

sgrem

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Does anyone know how/where to hook up the water pressure hose on the motor side?? I have the pressure gauge in the dash but dont know where to hook up the motor side hose. maybe a picture? or would really appreciate if someone can go check....
Thanks in advance.
 

pvanv

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Re: 2003 tohatsu 90 tldi - where does water pressure hose go on motor side?

It connects to a Tee fitting between the air compressor and the air rail.
 

sgrem

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Re: 2003 tohatsu 90 tldi - where does water pressure hose go on motor side?

Thanks so much for the reply! but I guess i dont know what i am looking at and exactly where that T is....Could you walk me through what i am looking at and what to do? Im pretty capable but i just want to do it right....
 

sgrem

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Re: 2003 tohatsu 90 tldi - where does water pressure hose go on motor side?

I see a T fitting. it has one hose going to the thermostat, one going to the air rail, and one going to the air pump.

THere is another hose coming out of the air pump to the tattle tale that shoots out the side of the motor.

Where is the most accurate place to put it? Do i T into the tattle tale hose? or make that other T into a fourway? or what is best way??

My motor is mounted very high on my tunnel hull and on a jack plate so i really need to know when water pressure starts to drop.
 

pvanv

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Re: 2003 tohatsu 90 tldi - where does water pressure hose go on motor side?

View attachment 120450

See the diagram attached above. The water pressure is sensed at the tee between the compressor and the air rail.
 

sgrem

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Re: 2003 tohatsu 90 tldi - where does water pressure hose go on motor side?

Hate to be a pain and i appreciate your focus. I cannot open the attachment.

So am i supposed to make that T into a fourway?
 

dtj

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Re: 2003 tohatsu 90 tldi - where does water pressure hose go on motor side?

Hate to be a pain and i appreciate your focus. I cannot open the attachment.

So am i supposed to make that T into a fourway?

He is saying you can hook anywhere into that part of the system because it all sees the same pressure, you can make the T a fourway if you want or T splice into the most convenient part of that system that allows for ease of accessibility...........Don
 

sgrem

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Re: 2003 tohatsu 90 tldi - where does water pressure hose go on motor side?

gotcha....excellent thank you!!
 
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