Here's why it's concerning:
* Coolant in the combustion chamber: When coolant enters the cylinders, it turns to steam upon combustion, producing the white smoke. This steam is often accompanied by a sweet smell (like antifreeze).
* Engine damage: Continued operation with coolant in the cylinders can cause significant engine damage, including:
* Damaged pistons: Coolant can cause corrosion and damage to piston rings and cylinder walls.
* Rod bearing failure: Loss of lubrication can lead to bearing failure.
* Clogged catalytic converter: Coolant can clog the catalytic converter, resulting in further damage.
Other (less likely) causes of white smoke:
* Excessive moisture in the fuel: While less likely to produce a large volume of continuous smoke, damp or contaminated fuel could contribute to some white exhaust.
* Turbocharger failure: In some cases, a damaged turbo can leak oil into the exhaust, resulting in bluish-white smoke.
What to do:
* Stop driving immediately: Continuing to drive with coolant leaking into the cylinders will cause significant and costly engine damage.
* Have it towed to a mechanic: A professional diagnosis is crucial to determine the exact cause of the white smoke. Attempting to diagnose and fix this yourself can be dangerous and potentially worsen the problem.
White smoke is not something to ignore. The sooner you address this issue, the less extensive and expensive the repairs will be.
