[Spark365]

Hi, it's me again. I've been searching for a coolant leak for the past week. First, my upper vent line cracked, causing a leak and steam coming from engine. Replaced this, bleed coolant. Went for a drive, steam came from radiator again. I did monitor my engine and water temp, which never exceeded 210f, so I would assume my water pump is ok. I looked every coolant line and hose, everything seemed ok. The side plastic reservoirs are also not cracked. Steam is coming from radiator itself, but can't find water leaking, only steam. Could my radiator be clogged, or maybe a rad line is broken? I honestly don't know at this point.

Car is 335xi n54 2009 6mt with 121k miles

[Suvorovo]

Can you inspect the engine bay while it's running and hot? If you do see steaming, then you could easily see where that steam is coming from. Maybe the top of the radiator side plastics is cracked, but not enough to warrant massive leaks. If you have steam, you should have moist areas.