Leaking coolant
#1
04-24-2010, 11:19 AM
Join Date: Apr 2010
Location: Glasgow, Scotland
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Leaking coolant
#3
04-24-2010, 10:00 PM
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Location: Kuala Lumpur,Malaysia
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Araminta
I have the same situation with my reservoir rising, it happened once in a while in a traffic jam. The reason is because of the loop to bypass the heater matrix. I tried to use end cap at the 2 point on the engine to isolate the heater circuit but it failed (ruptured cos of high coolant pressure). Right now i am using the loop to joint the 2 points on the engine but with a closed valve in the middle of the loop to prevent the hot coolant from flowing back into the engine.
Why the reservoir level keep rising when we introduced the loop to bypass the heater?. Under normal condition when the thermostat is closed the coolant is being circulate back thru the original bypass on the engine side. When thermostat opens less hot coolant will be flowing back thru the original bypass circuit but more cold coolant from the radiator will be entering the engine thus maintaining the engine temp.
When we introduce the loop to bypass the heater we are actually building a new access for the hot coolant to flow back into the engine plus the original bypass coolant existing path. Under this condition this will result less cold coolant flow from the radiator into the engine and tend to overheat the engine. Since there is a restriction on the coolant flow from the radiator eventually the coolant level in the reservoir will rise cos of back pressure.
This symptom is the same as a stuck thermostat.
After installing the loop with a closed valve to bypass the heater circuit i have no problem with the cooling system anymore
Good luck.
I have the same situation with my reservoir rising, it happened once in a while in a traffic jam. The reason is because of the loop to bypass the heater matrix. I tried to use end cap at the 2 point on the engine to isolate the heater circuit but it failed (ruptured cos of high coolant pressure). Right now i am using the loop to joint the 2 points on the engine but with a closed valve in the middle of the loop to prevent the hot coolant from flowing back into the engine.
Why the reservoir level keep rising when we introduced the loop to bypass the heater?. Under normal condition when the thermostat is closed the coolant is being circulate back thru the original bypass on the engine side. When thermostat opens less hot coolant will be flowing back thru the original bypass circuit but more cold coolant from the radiator will be entering the engine thus maintaining the engine temp.
When we introduce the loop to bypass the heater we are actually building a new access for the hot coolant to flow back into the engine plus the original bypass coolant existing path. Under this condition this will result less cold coolant flow from the radiator into the engine and tend to overheat the engine. Since there is a restriction on the coolant flow from the radiator eventually the coolant level in the reservoir will rise cos of back pressure.
This symptom is the same as a stuck thermostat.
After installing the loop with a closed valve to bypass the heater circuit i have no problem with the cooling system anymore
Good luck.
#4
04-25-2010, 07:15 AM
Join Date: Apr 2010
Location: Glasgow, Scotland
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