water pressure guage?

[Dawgs]

i wanna hook up my water pressure guage but i lost the directions. i already ran the tubing but what wires go where?

and where should i tap into to hook up the tube at the motor

 

[d.boat]

Re: water pressure guage?

go to the teleflex website, there's complete instructions for download. If yours isn't a teleflex, I would imagine the hook up would be exactly the same.

 

[Zeeter]

Re: water pressure guage?

i wanna hook up my water pressure guage but i lost the directions. i already ran the tubing but what wires go where?

and where should i tap into to hook up the tube at the motor

The wires cant be that hard. Theres only two. One is a ground the other is for a light which would be a switched battery positive.
No clue what kind of motor?

 

[Dawgs]

Re: water pressure guage?

1990 johnson 150. so if i dont need it to light up then i done have to worry about the wiring? if i want lights i can hook up ground to the negative side of the fuse block and positive up to the ignition?

 

[gss036]

Re: water pressure guage?

Correct, most people don't bother with the light. Remember that the gauge works off of air pressure, not water pressure so do not allow the water to fill the hose otherwise you will ruin the gauge. Just hook up the line and the water compresses the air.

 

[Dhadley]

Re: water pressure guage?

A water pressure gauge does indeed work on water pressure. Not air pressure. Not really sure where you'd even get air pressure in the cooling system anyway.

On a V6 crossflow (1990 150) you simply T into the overboard indicator line.

 

[Dawgs]

Re: water pressure guage?

just "t" into the telltale ? willi get a accurate reading?

 

[d.boat]

Re: water pressure guage?

just "t" into the telltale ? willi get a accurate reading?

on my old 80's V6 crossflow that was the case. I have a '90 V6 looper now and it goes somewhere else. Just as simple, but the T into the telltale didn't work, I had to read the instrucitons more carefully to figure out which hose to T into. The installation instructions I mentioned that are available on the teleflex website give directions for all sorts of engines, but if yours is a crossflow, I'd guess it would be that simple.

 

[gss036]

Re: water pressure guage?

Like I said, the water compresses the air and makes the gauge work. I guess it is one of those things, someone always has a better idea or contradiction, that is just part of a forum, it is all about opinions, right or wrong.

 

[Dawgs]

Re: water pressure guage?

ok 2 more questions...how do i know if i have a "looper" or a "crossflow"

and can some please post a link to the directions on the teleflex website? i was on the site and cant find the directions you speak of

 

[d.boat]

Re: water pressure guage?

Look at teleflexmarine.com and explore user's manuals and support areas.

 

[Eshaw150]

Re: water pressure guage?

Like I said, the water compresses the air and makes the gauge work. I guess it is one of those things, someone always has a better idea or contradiction, that is just part of a forum, it is all about opinions, right or wrong.

Water pressure is what it uses thats why it calles a water pressure gauge not a air in watersystem gauge
the gauge the gauge bleeds out the air out of the system
and uses the liquid

 

[Silvertip]

Re: water pressure guage?

OK -- enough already. Air is not "bled out of the system". Just like the speedometer, water pressure, wherever you tap into the system, compresses air in the tube feeding the gauge. There is no escape for this air. If there was, water would come out and your feet would get wet. The air trapped and compressed in the tube causes the Bourdon tube in the gauge to unwind moving the dial. There is no water or air flow in the system. Only slight compression of air due to the water pressure.

As for where to tap into the engine, it varies by engine and cooling system design. On some the tell tale works just fine. In the grand scheme of things the telltale is just a pinhole leak in the cooling system compared to the wide open flow of cooling water through the exhaust. On other engines, you do need to tap into the water jacket or some other spot where pressures is greatest. The simplest way to test this is to "T" into the telltale. If it works great. If not, find a new spot.

 

[dontask]

Re: water pressure guage?

just "t" into the telltale ? willi get a accurate reading?

Check out Gaffrig 0 to 15 psi water pressure gauge. Don't get one that reads in a high range you'll never need , if you want accuracy. I had two boats with water pressure gauges before and they worked great. I'm close to installing a 3rd. Takes the guess work out of knowing the condition of your water pump impeller.

 

[Dhadley]

Re: water pressure guage?

ok 2 more questions...how do i know if i have a "looper" or a "crossflow"

If it's a 1990 it's a crossflow 150. If it's a 1991 150 it's a looper which is completely different.

 

[Boss Hawg]

Re: water pressure guage?

SilvertipOK -- enough already. Air is not "bled out of the system". Just like the speedometer, water pressure, wherever you tap into the system, compresses air in the tube feeding the gauge. There is no escape for this air. If there was, water would come out and your feet would get wet. The air trapped and compressed in the tube causes the Bourdon tube in the gauge to unwind moving the dial. There is no water or air flow in the system. Only slight compression of air due to the water pressure.
Thanks , saved me some one finger typing