Easy to do just dip it in hot water .
if it opens it good , you could even use a thermostat to test heat of
if it opens it good , you could even use a thermostat to test heat of
water and determine the exact temperature
it opens at , if your so inclined .
if it opens its good enough for me .
if not buy a new or used thermostat here on Ebay UK
You can also test the temperature sensor fitted to the cylinder
head
Test between the connection at the top of sensor and
the earth of the threads , do this in hot water and it should decrease i
n the resistance ohms value as the sensor gets hotter.
The system uses water/antifreeze mix to cool the engine and carry
excess heat to the radiator .
the cylinder and cylinder is surrounded but a jacket of water the
crankshaft driver water pump flows water through
the circuit and cooled via the radiator .
Components in the system
Overflow and coolant bottle
radiator hoses
radiator
water pump
temperature sensor
filler cap ( spring loaded )
thermostat
possible overheating causes
Coolant level low
coolant bottle lid spring defective
leak in system preventing pressurization
faulty thermostat
water pump defective
clogged damage fins on radiator
there are also other causes for example engine not running
correctly or set up incorrect , excessive loads and oil failure or low.
BUY the ultimate Aprilia RS 125 workshop manual bundle HERE
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