This is always most noticeable at idle speed. Rough/Choppy Idle- When a head gasket blows, it will lower the effective compression ratio of one or more cylinders.Here are some of the most common signs of a blown head gasket: Most of the symptoms of a blown head gasket are obvious, since the way that the engine runs is usually affected. Here’s a good YouTube video on how to tell if your head or block is cracked.īlown Head Gasket Symptoms: Volkswagen Jetta Otherwise, you’ll go through all of the trouble of replacing it (it’s never a quick or easy job) only to find out that the head needs to come back off and be replaced. Even if it looks perfectly fine to the naked eye, it still could be damaged. If you do the head gasket replacement yourself, you should take it to a reputable machine shop and have it tested. It should be noted that when you blow the head gasket, the head itself may be warped or cracked. If the head gets damaged, the repair becomes much more costly. Outside of this job, it needs to fail before the head cracks or warps. Below you’ll find the symptoms, causes, and price of a Volkswagen Jetta head gasket.Ī head gasket’s job is to create a seal between the engine block and the head(s). If your Volkswagen Jetta has blown its head gasket, you may find it running poorly or not at all. One of the most common critical engine problems is the blown head gasket.
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