Like the steam engines of old, your Jeep Wrangler runs by pumping air and fuel through a series of enclosed systems. If there is a leak in any area, pressure will be lost and your vehicle may not run. There are hundreds of gaskets and seals in the average Wrangler and all of them are designed to keep gas and liquids on the inside, where it belongs. When a mechanic tells you that you have a "blown gasket,"ï¿½ it means that the seal has cracked or broken and is allowing compression or liquids to move between cylinders. The problem almost always results in an unmistakable loss of power and performance. Fortunately, replacement parts are inexpensive. Unfortunately, it may take a long time to locate the gasket or seal that is damaged and even longer to replace it. Still, it is job that most amateur mechanics can complete on their own in an afternoon, or two.