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dklug · 07-23-2010, 09:48 PM

My 83 shadow is having problems overheating. after riding for only several miles engine becomes excessively hot and coolant boils and overflows onto the ground. Checked radiator and there is plenty of coolant. I have a feeling it is the thermostat or the water pump. Has anyone ever had a similar problem and what was the solution? Any thoughts or tips are appreciated.

seruzawa · 07-23-2010, 10:38 PM

Could be a bad pump or a stuck thermostat or the system may be plugged with rust and crud. I'd replace the 'stat and use a radiator flushing agent. You do use anti-freeze and change it every couple years, right?

83750Rider · 10-20-2010, 06:40 AM

A few things it could be:

Bad thermostat (most likely)

Clogged coolant lines/radiator

Bad water pump

This is what my bike had -- Warped heads -- this causes overpressure, compression gas was pushing my coolant out after the engine warmed up.

07-23-2010, 09:48 PM	#1
dklug Registered Member Join Date: Jul 2010 Posts: 1	1983 Honda Shadow 750 cooling problem My 83 shadow is having problems overheating. after riding for only several miles engine becomes excessively hot and coolant boils and overflows onto the ground. Checked radiator and there is plenty of coolant. I have a feeling it is the thermostat or the water pump. Has anyone ever had a similar problem and what was the solution? Any thoughts or tips are appreciated.

07-23-2010, 10:38 PM	#2
seruzawa Robby Join Date: Nov 2001 Location: 8501 ft. Posts: 16,803	Could be a bad pump or a stuck thermostat or the system may be plugged with rust and crud. I'd replace the 'stat and use a radiator flushing agent. You do use anti-freeze and change it every couple years, right? __________________ I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched c-beams glitter in the dark near the Tanhauser Gate. All those moments will be lost in time, like tears in the rain.

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10-20-2010, 06:40 AM	#3
83750Rider Registered Member Join Date: Oct 2010 Posts: 2	A few things it could be: Bad thermostat (most likely) Clogged coolant lines/radiator Bad water pump This is what my bike had -- Warped heads -- this causes overpressure, compression gas was pushing my coolant out after the engine warmed up.