Here's a breakdown of the process, but I strongly recommend taking your vehicle to a qualified mechanic:
1. Diagnosis:
* Confirm the blown head gasket: Don't assume it's a blown head gasket without proper diagnosis. Symptoms can mimic other issues. Look for:
* White smoke from the exhaust (indicates coolant burning)
* Milky oil (coolant in the oil)
* Loss of coolant without visible leaks
* Low compression in one or more cylinders
* Bubbles in the radiator when the engine is running
* Sweet smell (coolant) in the exhaust
* Pressure test the cooling system: This is crucial to confirm a leak.
* Compression test: This helps determine if the head gasket is the culprit and which cylinders are affected.
2. Parts and Tools:
* New head gasket: Get a high-quality gasket specific to your Probe's engine (likely a Mazda KL-ZE V6 or a smaller 4-cylinder).
* Head bolts (or studs): These are often torque-to-yield and should be replaced.
* New head gasket sealant (if required): Follow the gasket manufacturer's instructions.
* Engine degreaser: To clean the engine bay before disassembly.
* Socket set, wrenches, torque wrench: You'll need a comprehensive set of tools.
* Jack stands, ramps: To safely lift the vehicle.
* Engine hoist (highly recommended): Removing and reinstalling the cylinder head is much easier with an engine hoist.
* Drain pan: For collecting fluids.
* Repair manual: A factory service manual or a Haynes/Chilton manual is essential.
* Clean rags and shop towels: To keep things clean.
3. Repair Process (General Steps – Consult your repair manual for specifics):
* Disconnect the battery: Safety first!
* Drain the coolant and oil: Dispose of them properly.
* Remove accessory components: This includes belts, pulleys, intake manifold, exhaust manifold, and other components that obstruct access to the cylinder head.
* Remove the cylinder head: This is the most labor-intensive part and requires carefully removing bolts in the correct sequence. Pay close attention to how things come apart for reassembly.
* Inspect the cylinder head and block: Check for warping, cracks, or damage. A warped head may need machining.
* Clean the mating surfaces: Thoroughly clean the cylinder head and engine block surfaces where the gasket sits.
* Install the new head gasket: Make sure it's seated correctly.
* Install the cylinder head: Tighten the head bolts (or studs) in the correct sequence and to the specified torque using a torque wrench. Improper tightening can cause head gasket failure again.
* Reinstall all removed components: Double-check everything.
* Refill fluids: Use the correct type and amount of coolant and oil.
* Test for leaks: Run the engine and check for leaks and proper coolant temperature.
Important Considerations:
* Engine timing: The timing belt or chain may need to be removed and reinstalled. Mistiming the engine can cause serious damage.
* Torque specifications: Following the exact torque specifications for the head bolts is critical. Use a torque wrench and consult your repair manual.
* Warped cylinder head: A warped cylinder head will lead to another blown head gasket. This requires machining the head to make it flat again.
Again, this is a complex repair. Unless you have significant experience with engine repair, it's strongly recommended to take your vehicle to a qualified mechanic. The cost of a professional repair will likely be less than the cost of a botched DIY job that requires more repairs or even a new engine.
