![]() ![]() That's why a blown head gasket is so crucial to avoid. The only fix for your car at that point? A total engine replacement. When an engine severely overheats, it can get so hot that moving metal components melt, warp and even fuse together. Worse, since a leaking head gasket adversely affects your cooling system, the problem compounds upon itself: the head gasket leaks, making the engine run hot, so the engine starts to warp from the heat of the engine, making the head gasket leak more severe, making the cooling issues even worse! Engine Running Hotīy far the greatest danger of a blown head gasket is that it can cause your engine to overheat. A big performance drop or a sudden increase in fuel consumption means it's definitely time to have the engine inspected by a pro. It may start using far more fuel and tanking your fuel economy, or it may stop making as much power as you expect. Commonly, when the oil has been contaminated by coolant, a frothy, foamy oil mixture will collect under the cap.Īs a result of increased heat output, reduced compression, greater friction and reduced cooling capacity, an engine with a blown head gasket may simply perform poorly. You can check for this symptom by looking under the oil cap of the engine. This can reduce the effectiveness of the oil, and eventually lead to damage over time. For instance, a leak between the oil galleries and coolant channels would allow coolant to get into the engine oil. Sometimes, the head gasket on your car can leak without affecting the combustion chambers themselves. These are just symptoms, but even more damage is likely taking place under the hood. The head gasket must be replaced as soon as. Oil can also seep into the combustion cylinders, making a sooty blackish-blue smoke from the tailpipe. A Subarus head gasket can wear through or even crack, causing loss of power, fuel efficiency or engine failure. When a head gasket fails, it may allow coolant to seep into the combustion chambers, where it gets burned up with the fuel and exits the tailpipe as whispy white smoke. If you can see smoke coming out of the tailpipe consistently, that indicates there's a problem under the hood. Once your car has properly warmed up, you shouldn't be able to see anything coming out of the tailpipe. ![]()
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