A problematic head gasket can affect different areas of your car. Because of this, there are many signs of a blown head gasket that you can look for. Some of them include exhaust, oil, and spark plugs. This article will discuss the various signs of a blown head gasket.
Exhaust

Your exhaust will present one of the common signs of a blown head gasket. When you have a gasket leak, you will notice white smoke coming out of your tailpipe. Sometimes drops of water will drop from the end of the tailpipe. The exhaust will also have a sweet smell to it.

Bubbles

Bubbles are also one of the signs of a blown head gasket. A gasket leak will cause bubbles of air to come into your radiator. To check for this, you should first remove the radiator cap then warm up the engine. When you rev the engine, you will see bubbles come out from the top of the radiator.

Oil

One of the next signs of a blown head gasket is contaminated oil. You will notice a milky ring surrounding your oil cap. This is caused by coolant entering the engine oil through the leaking gasket. This mixture leaves the milky ring around the oil cap when it evaporates. You can check for this by taking the car for a short drive, then checking the oil for contamination.

Engine

Lack of engine power is also one of the signs of a blown head gasket. The engine will lack power because of compression loss. The engine will also run poorly and will idle roughly. You should also be careful because the engine will overheat quickly when you have a blown head gasket.

Spark Plugs

Your spark plugs will present one of the last signs of a blown head gasket. If you have green coolant in your system, the spark plugs will have a green tint around them. If the problem is very severe, the coolant may start squirting out of the plug holes.