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help bleeding coolant system 95 civic ex

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Old Jul 22, 2012
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help bleeding coolant system 95 civic ex

Okay so I replaced the 02 sensor and the radiator and the thermostat and the CEL is finally GONE!! (YAY!!)

In order to get the sludge out of the coolant system, I am trying to flush it before filling with the new stuff so I don't just ruin the new radiator but I can't seem to get the bubble out of the system and from what I can tell, there just isn't any water going through the lower radiator hose to the thermostat - all other hoses are hot but that one and there seems to reference to a bleed screw somewhere which I cannot identify on the car - anybody got pics or a diagram where i might find it or an alternate method of getting the air out?

heat comes on, but I've not seen the radiator fan move yet - should I run it with the heater on or off until the fan kicks in first?


Any help would be appreciated as I really don't know what I am doing and can't afford to take it to the shop. So far, I do okay following guides and instructions from the helpful folks like you all!
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Old Jul 23, 2012
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Re: help bleeding coolant system 95 civic ex

Leave the temp lever set to heat, but keep the heater fan turned off.

If you got air trapped in the heater core, it can be a huge PITA to get bled out.


The bottom radiator hose won't get hot for a loooong time. The stat has to open several times before hot liquid makes it to the bottom of the radiator and starts going toward the stat.
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