Cooling Water Telltale Honda 4 Strokes

Sea Wolf · Posted: Wed Dec 22, 2004 4:24 am Post subject:

C-Sick

The tell-tale is just a small by-pass outlet on the overall cooling system. Most of the water is dumped into the exhaust system after being controlled by the thermostat.

Impellers damaged over a short period are almost always the result of restricted water intake, either on the water, or while flushing the engine. (Occasionally some newbie will start an engine without realizing it can't be done even for a few seconds without water available for the pump.)

Most probably you had a plastic bag or some other short term undetected blockage that damaged the impeller. Do you think you might have ingested quite a bit of mud or sand at Blakley? Unfortunately, you may never know what did it.

Thank goodness for the monitoring circuits that limit RPM when the engine temperature rises. Joe.

Larry H · Posted: Wed Dec 22, 2004 11:17 am Post subject:

While it's possible for a failed impeller to break up and plug up something, it may just be a coincidence.

While I was an outboard mechanic, I replaced many impellers and water pumps because the owner started the motor 'dry'. It only takes 10--15 seconds of dry running to melt or damage the impeller.