BMWTurboDzl
Thread starter
My vehicle developed a no heat condition and I think I've narrowed it down to a plugged heater core. There's a heater control valve on the inlet hose which controls the amount of heated coolant making its way to the heater core. My diagnosis is based upon the fact that the inlet hose between the control valve and the heater core is warm which leads me to believe that the control valve is functioning. The outlet hose is cold.
I'm wondering what sort of experience people have flushing the core only OR whether you guys think it's easier to just use a cleaner flush on the entire system?
Recommended products? Liqui Moly, Motul, and others have a 500 ml "pour-n-idle" product.
My engine (N55) has an electric water pump and I don't have a block drain so I don't know how I would flush out any cleaner.
UPDATE: 63k miles on the odo. 2015 MY
I'm wondering what sort of experience people have flushing the core only OR whether you guys think it's easier to just use a cleaner flush on the entire system?
Recommended products? Liqui Moly, Motul, and others have a 500 ml "pour-n-idle" product.
My engine (N55) has an electric water pump and I don't have a block drain so I don't know how I would flush out any cleaner.
UPDATE: 63k miles on the odo. 2015 MY
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