hot water

[justincase]

I have a 1986 mercury 150 oil injected my question is how warm or hot is the water suppose to be coming from the piss hole?

[powerstroker]

shouldn't be that hot, really depends on water temp and how hard you are running it but your thermostat shouldnt let it get that hot. It may be warm to the touch but its not going to burn you!

[justincase]

Ok started it for the first time of the season on the ear muffs runs perfect but after only 3 minutes the stream was steaming outside temp was about 68 degrees and it didnt burn my hand but it was hot

[powerstroker]

how was your water pressure? Sounds like you didnt have enough or you may have a bigger issue, shouldnt be that hot after 3 mins!

[kingsbiship]

Sounds like it needs an impeller!

[Chris E]

Ok started it for the first time of the season on the ear muffs runs perfect but after only 3 minutes the stream was steaming outside temp was about 68 degrees and it didnt burn my hand but it was hot

sounds like you have a temp problem - on the muffs you should not have a hot water issue - most municipal water systems run around 60psi, more than enough to over compensate for a bad impeller (been there done that). if that water pump is more than 3 years old, time for a new one.

[justincase]

It was a steady stream water was full on, i went aheadand ordered the parts anyhow tonight its been awhile since i worked on an outboard like 20 years so are there any special tricks?

[LAAllison]

T-stat opens at about 140 degrees which could show some steam but not be hot enough to really burn your hand. You shouldn't get a real stream until the t-stat opens. Both my Mercs (87 200 & 97 225) take a couple of minutes to get to 140 degrees. I'd change the pump just because I put a new one in every spring. Holler if you need help.

Art


If it's slow it must be an OMC.

[justincase]

had it out this weekend ill replace the pump next week but my gauge said 110 running and no higher than 180 at idle for about 20 minutes........good or bad?

[daren34]

sound like you need an impeller

not enough water at idle

i would think it would stay at 140 after warm up unless the t-stats are stuck open

might be time to clean them out

daren