175 V6 Evinrude Warning buzzer sound

[TONY H]

Warning sounds after running it beyond an idle. Question: Is there water passages only through the heads or is there water passages throughout the Block? The thermostats have been changed and the Impeller was done. My next guess it that I have a blockage in the Heads. Is this an intellegent deduction? What else would I look for when I get this over heat problem?<br /><br />PS the Head on one side is getting hotter then the other one.

 

[jim dozier]

Re: 175 V6 Evinrude Warning buzzer sound

See related post "30hp Yamaha overheating buzzer ???" by Muskiekid.<br />1. Verify if engine overheats.<br />2. Correct heating problems<br /> Impeller<br /> Thermostat<br /> Head gasket<br /> coolant passages<br /> check for pieces of previous broken impeller<br /> back flush from thremostat<br />3. Check sensor and wiring<br /><br />Also I'm not familiar with your particular engine, are you sure its an overheat buzzer and not an oil injection or other alarm. Verify this also.

 

[TONY H]

Re: 175 V6 Evinrude Warning buzzer sound

sounds like I'm approaching it correctly. <br />With the Heads off, I guess I can flush water backwards through the passages.(?)<br />I'm hoping to find all salt in the Head. The guy who owns this boat never Flushes this engine. As much as I try to impress upon him the importance.<br />This year motor doesn't have oil injection so I'm assuming the buzzer is for OverHeat only.<br /><br />Thanks

 

[Dhadley]

Re: 175 V6 Evinrude Warning buzzer sound

The year of the motor or model number would help. However if its a crossflow replace the water deflectors while you have the heads off. <br /><br />Good luck!

 

[jim dozier]

Re: 175 V6 Evinrude Warning buzzer sound

You can look for a post of mine a couple of months ago on a Suzuki. I removed the head and found seriously clogged head cooling passages. However, this was a known problem associated with an older style head gasket. Also found some blockage in the exhaust housing passages. Found 2 pieces of old impeller in the block but I don't think they were hurting anything where they were located. Relatively new thermostat stuck closed first time I test drove it and had to be replaced. Also eventually had to replace the sensor to get it to shut up. <br /><br />Also check and see if your engine has a pressure relief valve that may be stuck open.<br /><br />Also some engines have grommet trouble at the top of the water pump tube where it joins the powerhead. The grommets get crimped on re-installation and block the tube.

 

[TONY H]

Re: 175 V6 Evinrude Warning buzzer sound

Thanks all<br /><br />I printed this out and will take a look if I get 'volunteered' to work on the engine.