Warm Water Out of Motor

[hjerk24]

Threw earmuffs/baffle covers on the motor with the hose and had water spitting out in the regular place. The water was hot, and a guy commented that it must be a water pump issue. Could it be that the boat was out in the 90 degree weather all day, and the motor was just warm from that. I have never had any problems with the spit water coming out. Now I am second guessing my boat? I am hoping that the motor being hot (in sun) all day was what warmed the water, and even caused the water flowing through to be a bit warm. Thoughts? I have NEVER had a problem with the motor, or the water cooling EVER! The water trickled out, then began it's normal flow. I suggested too, that those ears, don't have near as much suction as being in the water, and it is not a real good indicator ---like being in the lake with the boat running, nor is it a good thing to do outside the water.

Thoughts?

[cart7t]

Well, a few things for starters.

1. If it's sunny out likes it's been the past couple months and I take the hose and hook it up to the OB and turn it on, the water coming out of it at first will be hot.  A matter of the water left in the hose heating up.

2. The water is supposed to cool the engine down.  Since the muffs can't supply as much water as say, running in a test tank, the engine will begin to overheat because of that.  The water running through the engine, which isn't the same pressure on the muffs, gets hotter transferring the heat from the overheating block.

3. Run the OB too long and you're overheat alarm will turn on.

There's nothing wrong with your OB.  

[Fishing Rhino]

With that gizmo on your motor, connected to a hose, it doesn't need suction.  The hose provides more pressure than is a available to the pump in a foot or two of water.

If the motor is running, I would expect that water to be warm/hot.  Maybe the new motors are different, but they used to stream water from the engine block.

Have you found that stream of water to be cool in the past, or are you assuming that it was?

I also believe that today's motors have thermostats to control engine temps in the optimum range.  Don't know about outboards, but your car water temp will be 180 to 200 degrees in the block.  

Just searched.  Ideal temps for outboards range from 125 to 165 degrees.

I think most hot water systems in homes are about 140.  You know how hot that feels at the tap.  I would expect the telltale stream to be hot.

[Sam]

It better be warm.

It means the water is running through the motor and the pump is working, doing its job by taking the heat away.

If the water is cold, the thermostat may not be working.

Just food for thought.  

[hjerk24]

Thanks- had a guy look at the engine tonight, and said that hot water "was not good". I don't know all there is, but told him I have never had a problem. I was a bit taken back by his comments, but I am no engine guy, and am not super educated about their workings. I have never felt the stream of water while running on a lake, and never was inclined to. Your responses have helped me "mentally". Sometime words can get you thinking bad stuff. You guys helped a lot! He may not know all there is, seeing your responses.

Thanks a TON-

Jamie

[Way2slow]

Thermostat should bring the water up to approx 135 - 145 degrees.  Not sure if you consider that warm or hot but it can be very uncomfortable coming out of the pisser.

[Diablos]

Whenever I muff my engine the water coming out out will be a little warmer that going in. It seems pretty normal to me.

[grizzly1654]

The water coming out of the pee hole should not be hot, but the water coming out from around the prop will be.

[hjerk24]

Why the varying answers?

Seems like confusion.....?????

[old bassman]

If the motor is a Mercury, I have found out that the water will be hot. On my XR6 150HP. I asked the same question and was concerned about the water pump but all the answers i got back were that the water will be hot from the pee hole. Also my motor runs great with no problems. It is also a 2-stroke, a 4 stroke is a totally different animal!!!

[Way2slow]

On most motors the water coming out of the pisser serves two purposes.  One is to give you a visual indication that water is circulating, the other is to bleed off any air that might be traped in the top of the block.  Air pockets can turn to steam, creating all kinds of cooling problems.  Since the exhaust is water cooled and that water passes over the exhaust, plus the thermostats are trying to regulate the water temp around 130+ degrees, it's GOING to get pretty dang warm if you let it run very long.  If it stays cold or barely warm, you had better check your thermostats.  An infra red thermal sensor will show your head temps close to 140 degrees  

[hjerk24]

Motor is running plain as normal.  The guy just has no idea about what he was saying.  Thanks for the replies...a small few words that caused a lot of stress for a day or so, but no longer!

PCE!