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James, Technician
Category: Car
Satisfied Customers: 580
Experience:  6 years automotive 4 years mining electrical
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Loud..compression..a blown plug, now he says its the head gasket

Resolved Question:

i have a 2000 land rover discovery, the car is making a loud compression like noise, at first the mechanic said it was probably a blown plug, now he says its the head gasket and not worth doing. the car has about 115k on it. i have been on line looking at liquid sealants.

the car is not blowing smoke, only noise.

what do you think
Submitted: 5 years ago.
Category: Car
Expert:  James replied 5 years ago.
Hi there

Thanks for using Just Answer.

I believe I understand the noise that you are describing.

Both these issues are possible causes of this sound.

Rather than guessing I believe its a good idea to preform a Tk test. This is preformed on the cooling system , a tube is placed over the cooling system.This tube contains die and changes color when detecting carbon monicide in the water. This would then dictate if you indeed have a cracked head gasket.

That will check if there is exhaust gases in the water and then you have a look at your oil and water and see if there is water in the oil or vis versa.

If none of these symptoms are present then you do not have a cracked head gasket.

Really the head gasket to rectify would cost you at most 3500 Max.

I hope this information assists you with your deliberations.If you need any more information about this issue please feel free to ask.



Customer: replied 5 years ago.

if it is the head gasket , do liquid products such as Steel Seal work and if so which is the best



Expert:  James replied 5 years ago.
Hi there

Lets just say i would never use a chemical sealant in my engine.

It repairs the leak for a while but destroys lots of other components.

I can not recommend anything like that.


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