86 mariner 150 HP poppit valve

[foxdodgeman2006]

I changed the diaphram and gaskets now there is I guess a little relief hole in the houseing that continously spits water not a stream just spitting water at ideal have not takin boat out since replacing is this normal it is the 2 bolt type kind of round style please help

 

[Maxz695]

Re: 86 mariner 150 HP poppit valve

The hole spitting water indicates a leak in the diaphram

 

[foxdodgeman2006]

Re: 86 mariner 150 HP poppit valve

Its brand new diaphram

 

[Maxz695]

Re: 86 mariner 150 HP poppit valve

It still should not be spitting water through the little hole View attachment 172120 This is off my 40 HP Mine would spit water when the engine coughed due to water intrusion through the divider plate. I replaced the diaphram and it stoppe spitting water. Unitl I fixed it I just put a screw in it. There is no hole on this replaced cover but the old one had the little hole in the center. You may have nicked the new diaphram or not centered it when putting it on causing a leak. In any case no water is supposed to come out of it. The diapham is like a spring and gives relief when a backfire occurs

 

[Faztbullet]

Re: 86 mariner 150 HP poppit valve

The poppet valve opens under pressure of the water pump and block restrictions(t-stats,passageways). Its purpose is to bleed off excessive water pressure of the water pump under rpm thus the name poppet valve. The hole is there for 2 things on V-6, indicater a bad /leaking diaphragm and air passage, if hole is plugged the poppet will not full open. The reason you have water is improper installation,loose screw to stem,corroded/pitted housing on has a nick or pinhole.....

 

[Dukedog]

Re: 86 mariner 150 HP poppit valve

The poppet valve opens under pressure of the water pump and block restrictions(t-stats,passageways). Its purpose is to bleed off excessive water pressure of the water pump under rpm thus the name poppet valve. The hole is there for 2 things on V-6, indicater a bad /leaking diaphragm and air passage, if hole is plugged the poppet will not full open. The reason you have water is improper installation,loose screw to stem,corroded/pitted housing on has a nick or pinhole.....

+1..........Clean is usually tha big culprit on new stuff install. All Metal pieces need ta be put to tha "wire wheel".............

 

[Maxz695]

Re: 86 mariner 150 HP poppit valve

Your corect fastbullet. I drew my assumption as I was not running a thermostat at the time and the coughing backpresure from the leaking divider plate was creating a surge in the water ports. I had thought that this was to protect gaskets from blowing a hole in them. Thanks for the clearification on the opening of the T stat and the popit relieving the pressure when doing so.

 

[foxdodgeman2006]

Re: 86 mariner 150 HP poppit valve

Ok I will pull it back off and try cleaning it and see if that helps thanks for the advice