* Coolant Mixing with Combustion: A blown head gasket allows coolant to enter the combustion chambers, which can lead to:
* Misfires: Coolant in the cylinders disrupts the normal combustion process, causing misfires and uneven engine running.
* Reduced Power: The mixture of coolant and fuel reduces the efficiency of the engine, resulting in a loss of power.
* Compression Loss: A blown head gasket can also cause loss of compression in the cylinders, which further contributes to rough running.
* Other Symptoms: In addition to rough running, you might also notice:
* White Smoke from Exhaust: Coolant entering the combustion chamber can vaporize and create white smoke.
* Overheating: Coolant leaking into the cylinders can prevent the engine from cooling properly.
* Low Coolant Level: You'll likely find that your coolant reservoir is low or empty.
* Sweet Smell from Exhaust: Coolant has a sweet, almost sugary smell that you might detect in the exhaust.
Important Note: It's crucial to address a blown head gasket promptly. Ignoring it can lead to further engine damage and costly repairs.
If you suspect a blown head gasket, it's recommended to have a mechanic inspect your Jetta as soon as possible.
