90 4stroke pee hole not flowing

[Bstout]

I have a 2003 90 merc 4 stroke. at the begining of this year I had a new water impeller installed just because its time..water came out the pee hole like it did new fished all summer...SO I took my boat out the other day and no pee out hole..called dealer and they said if the thermostate wasnt open it wouldnt pee! HUH it seemed to always pee in the past, I think it did anyway....anyone have any knowledge on this or where to get a good repair manual for this 90 4 stroke..

 

[Silvertip]

Re: 90 4stroke pee hole not flowing

It is very common for the plastic fitting that the tell tale hose connects to to get plugged up. Stick a length of weed whacker line up the tube to open it up. If there was a cooling system problem the overheat warning would sound.

 

[Bstout]

Re: 90 4stroke pee hole not flowing

I did that earlyer this year it was peeing 2 streams around a little rock or something... and unplugged it fine...I tried that this time no good..then i took the cowl off and followed the hose back to a TEE oh the side of the engine.. and took the hose off the Tee and no flow out the Tee anymore ideas.... the overheat buzz never has gone off and my water psi shows positive at an idle and 10 or better running........any more ides silverTip

 

[Silvertip]

Re: 90 4stroke pee hole not flowing

Stick the weed whacker line into the "T" or remove it to verify that its not plugged. But if you are reading water pressure, one side of the "T" goes to the pressure gauge and the other to the tell tale so you either didn't get the line clean or its pinched.

 

[Don S]

Re: 90 4stroke pee hole not flowing

Pull the hose off the little plastic piece that goes thru the cowling. Then see if you get water.

 

[Bstout]

Re: 90 4stroke pee hole not flowing

Thanks Silver Tip I will check the T a little thouroughly....Is or was the guy at the boat shop right saying " It wont pee at the tell taill unless the thermostate opens"....I say hes wrong its always peed even cold...but anyway good info SilverTip I will let you know what I find...



Pull the hose off the little plastic piece that goes thru the cowling. Then see if you get water.
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Don I think Im beyond that Im back at the T now at the engine..i took the hose completly off at the t and there was no flow there that eliminated the plastic fitting at the cowl all togther unless i misunderstood you..but thanks anyway..

 

[Silvertip]

Re: 90 4stroke pee hole not flowing

If you have water pressure, the take off point for that gauge is the same exact point as the tell tale (the "T"). So if the gauge shows water pressure, the tell tale should flow as well. This isn't rocket science. Its like putting a "Y" in your garden hose. If one side flows water and the other doesn't the hose is plugged or kinked or the nozzel at the end is turned off. Same with the tell tale. Its blocked or kinked. The thermostat has nothing to do with it. If it did the gauge would not show water pressure either. Here's a picture of the two lines. The big one is the tell tale. The small one feeds the water pressure gauge. Disconnect the tell tale and blow through it or run weed whacker line through it. Then clean the "T".

 

[Bstout]

Re: 90 4stroke pee hole not flowing

If you have water pressure, the take off point for that gauge is the same exact point as the tell tale (the "T"). So if the gauge shows water pressure, the tell tale should flow as well. This isn't rocket science. Its like putting a "Y" in your garden hose. If one side flows water and the other doesn't the hose is plugged or kinked or the nozzel at the end is turned off. Same with the tell tale. Its blocked or kinked. The thermostat has nothing to do with it. If it did the gauge would not show water pressure either. Here's a picture of the two lines. The big one is the tell tale. The small one feeds the water pressure gauge. Disconnect the tell tale and blow through it or run weed whacker line through it. Then clean the "T".

Is the t on all merc engines the same as far as feeding the psi gauge and the tale tell.???????.i will check it out and let you know what i find..thanks for taking the time to take a picture and point out your wisdom on this its appreciated!

 

[Silvertip]

Re: 90 4stroke pee hole not flowing

There are only two hoses. Follow the tell tale back to the T. This one is special but a T is a T. -- One inlet and two outlets. If one side works and the other doesn't, the side that doesn't is plugged or pinched.