It says low coolant on gauges, but the coolant level is fine. Also takes forever for heat to warm up.
SOURCE: BMW 318 ci coolant light comes on then goes off -
more than likely is being caused by a faulty level sensor but first check the connection and fluid level when engine is cold as fluid level will rise when engine warms up
SOURCE: bmw 320i touring 1995 n reg
check and see if you get water/coolant circulates when you have the cap off (only check from cold start) the original water pump came with a plastic impeller and tends to strip on the shaft also check your thermostat before replacing water pump.
SOURCE: my 325i has been running at low coolant level
Ekun,
What you're describing is a blown head gasket or a cracked head. What's happening is the gasket or head is letting coolant get into the combustion chambers of the engine, producing your white smoke, and accounting for your coolant loss. You need to take it in to get checked out; often times if the head warped or something, it will need to be machined. This is something that's urgent; you can ruin your engine quickly running it this way. For future reference for you, here's the different smokes you will see and what causes them. White smoke-coolant in the combustion chambers, caused by leak in head or head gasket. Blue smoke-oil in combustion chambers, can be caused by worn, broken, or weakened piston rings, faulty PCV valve, worn valve guides. Black smoke-engine running too rich, and unburned fuel is escaping. I hope you get it fixed soon, those 3-series are great cars....mine's been awesome.
Testimonial: "Hey - thanks for coming back so quickly, much appreciated. Spoke to the dealer and an independent yesterday - this is spot on. Thanks"
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