Inside your engine is a complex combustion system that works to get your car moving. Engine oil reduces friction between each part, while engine coolant regulates temperature to prevent overheating or freezing.
Both fluids are essential for keeping your engine running smoothly, but mixing them can deprive the oil's lubricating qualities and make the coolant stop working as it should.
This is where the head gasket comes in. Positioned at the cylinder head, it’s responsible for sealing in the internal combustion process and keeping coolant and oil from coming into contact. It also helps maintain pressure in your engine.
Unfortunately, it’s common for an old head gasket to blow out. A non-functional gasket can wreak havoc on your engine, so it’s important to get it looked at ASAP.
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It can be hard to diagnose a blown head gasket, as it shares similar symptoms to other engine faults. With that said, there are a few warning signs that make a blown gasket stand out:
Early intervention can prevent the need for a full head gasket replacement, saving you both time and money. It could also mean the difference between keeping your current vehicle and having to purchase a new one.
When you bring your vehicle to us, you can trust that we will take care of it as if it were our own. We'll take the time to thoroughly inspect your vehicle and provide you with an accurate diagnosis, so you can make an informed decision about your options going forwards.
Whether you need a simple repair or a complete head gasket replacement, we have the skills and expertise to get the job done right.
We are based in Blandford, Dorset. Book your car in for head gasket repairs online.
Head gaskets most often fail due to engine overheating, which puts excessive stress on the seal between the engine block and cylinder head. Age and high mileage are also contributing factors, as the gasket material degrades over time. In some cases, improper torquing during a previous repair can cause premature failure. If your engine has been running hot, it is worth booking a diagnostic test before the problem escalates.
Continuing to drive with a blown head gasket causes progressive engine damage. Coolant and oil will mix, stripping the oil of its lubricating properties and accelerating wear across internal components. The engine will overheat repeatedly, and in serious cases, the cylinder head can warp or crack, turning a repairable fault into a far more costly one. If you have noticed any of the warning signs of a head gasket problem, have the vehicle inspected as soon as possible.
A mechanic will typically carry out a combination of checks to confirm a head gasket failure, which can include:
At Sunrise Servicing & MOT Centre, we use dealer-level diagnostic tools to pinpoint the fault accurately before recommending any repair.
Not always. Caught early enough, a blown head gasket can often be repaired without replacing the entire engine. The outcome depends on how long the vehicle has been driven with the fault and whether secondary damage has occurred. Early intervention gives you the best chance of a straightforward repair. If you are unsure of the extent of the damage, our team can conduct a full vehicle inspection and diagnosis to provide an accurate picture.
The cost reflects the amount of labour involved rather than the parts themselves. Accessing the head gasket requires significant engine disassembly, including removing the cylinder head, draining fluids, and, in many cases, sending the head for machining. The process is time-consuming and requires a skilled technician to do it correctly.
Our team will always explain the work involved and the cost before anything goes ahead. Simply get in touch for a quote.
Head gasket replacement is a labour-intensive job. On most vehicles, it takes between six and ten hours of workshop time, though this varies depending on the engine layout and whether the cylinder head requires machining. Sunrise Servicing & MOT Centre suggest you plan for the vehicle to be off the road for at least a day.
Several engine faults can produce symptoms similar to a blown head gasket. These include:
A thorough inspection is the only reliable way to tell these apart. Our team can conduct the necessary checks and provide a clear diagnosis. Book an appointment online or call us on 01258 459 798.
Yes, a blown head gasket can cause a vehicle to fail its MOT on several grounds, including excessive exhaust emissions, visible fluid leaks, and engine performance issues. If you suspect a head gasket problem, it is worth getting it diagnosed and repaired before presenting the vehicle for testing.
When performing a head gasket repair, a thorough technician will inspect several surrounding components simultaneously. These include:
Catching related wear at this stage avoids the need to disassemble the engine again shortly afterwards.
Our technicians carry out this process as standard on every repair. Simply book online or call 01258 459 798.
That depends on the vehicle's age, mileage, and overall condition. If the car is otherwise reliable and the repair cost is reasonable relative to its value, fixing the head gasket is usually the more cost-effective choice. If there are multiple other faults or the engine has sustained significant secondary damage, the calculation changes.
Our technicians will provide an honest assessment before recommending any work. See our customer testimonials to understand how we approach these conversations.