How to Know what is faulty Cylinder head or Head gasket?

You cannot detect that easily.You are driving and you see white smoke from exhaust.This basically makes you think,what exactly is faulty. But i tell,you cannot know this without inspecting.Don't just replace parts,without confirming.
A cracked cylinder head or a failed gasket can only be identified after the head has been removed.(both give the same symptoms).
Generally the head won't crack by itself and the gasket fails first. Once you have the head removed you can bring it to a machine shop and they can test (either dye, pressure test, or magnaflux) to determine the condition of the head.(you can't always see cracks) It should also be checked for warpage and re-surfaced if it is.We are never sure if the problem is the gasket or a cracked head until the head is removed and pressure tested for a crack. Oftentimes, we remove the head carefully to preserve the gasket as much as possible so that we can inspect the gasket for leaks. If it is obvious that the gasket was leaking based on visual observation of breaks in the gasket, then we may skip the pressure test and just replace the gasket; however, there is no way of knowing until the head is off the engine.

This details will help.Thanks.

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If you need dis-assembly or replacement instructions for any other auto/car part, or you want to ask question related to your car/truck jeep problem then please leave the comment with your details, so I can provide you the required instructions and solutions.

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For more car help solutions,check the list mentioned below:-----

Water in engine oil?

http://schematicsdiagram.blogspot.com/2011/12/water-in-engine-oil.html

Leaking head gaskets?

http://schematicsdiagram.blogspot.com/2011/12/leaking-head-gaskets.html

How to replace head gasket on 1994 Honda Accord?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-head-gasket-on-1994.html

Can I just replace Head Gasket on 1991 Buick Century?

http://schematicsdiagram.blogspot.com/2011/12/can-i-just-replace-head-gasket-on-1991.html

Location of Head Gasket on 1994 Grand Marquis?

http://schematicsdiagram.blogspot.com/2011/12/location-of-head-gasket-on-1994-grand.html

HOW TO REPLACE A HEAD GASKET

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-head-gasket.html

How to replace Exhaust Manifold on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-exhaust-manifold-on.html

How to replace Intake Manifold on Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-intake-manifold-on-acura.html

How to replace Cylinder Head On Acura Car models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-cylinder-head-on-acura.html

Is it Easy to replace head gasket on 2004 Toyota Camry?

http://schematicsdiagram.blogspot.com/2011/12/is-it-easy-to-replace-head-gasket-on.html

Should I only replace head gaskets or complete head gasket assembly on Ford Taurus?

http://schematicsdiagram.blogspot.com/2011/12/should-i-only-replace-head-gaskets-or.html

Temperature gauge went up?

http://schematicsdiagram.blogspot.com/2011/12/temperature-gauge-went-up.html

Car overheating?

This problem is faced my many car users.Very difficult to troubleshoot and takes long hours to get problem confirmed.Not always,but in most of cases.
It could be the thermostat, the water pump, or engine damage from prior overheating.

The first thing that you want to do is check the cooling system for any exhaust gases. There is a tester for that, that you can get from Autozone for about $20. It comes with instructions, but there is a blue fluid that is used in it, if the fluid turns yellow, that is exhaust gases.

If there are any exhaust gases in the cooling system, that will cause more pressure than desired and will allow the engine to burn coolant and/or heat the coolant up too high. Most times not filling the crankcase with coolant either.
If there are, then there would be an internal engine problem, like a head gasket or head.
Of course, you will want to make sure that the system is full, the coolant is circulating, and the cooling fan(s) are working as well as the pressure cap holding pressure.

Getting this details checked will help you to confirm the problem.

Thanks.

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Car AC Blows Warm Air ?

http://technoanswers.blogspot.com/2011/10/car-ac-blows-warm-air.html

How to test AUTO AC pressure?

http://howtobyme.blogspot.com/2011/10/how-to-test-auto-ac-pressure.html

AUTO Air Conditioning Troubleshooting?

http://technoanswers.blogspot.com/2011/10/auto-air-conditioning-troubleshooting.html

AUTO A/C COOLING PROBLEM?

http://technoanswers.blogspot.com/2011/10/auto-ac-cooling-problem.html

Fixing refrigerant leak?

http://howtobyme.blogspot.com/2011/10/how-to-fix-refrigerant-leak.html

How to locate Car AC Refrigerant leak?

http://technoanswers.blogspot.com/2011/10/how-to-locate-car-ac-refrigerant-leak.html

CAR AC INTERMITTENT COOLING?

http://technoanswers.blogspot.com/2011/10/car-ac-intermittent-cooling.html

What causes INTERMITTENT COOLING on Car AC system?

http://technoanswers.blogspot.com/2011/10/what-causes-intermittent-cooling-on-car.html

Car AC making Noise?

http://technoanswers.blogspot.com/2011/10/car-ac-making-noise.html

BAD ODOR ON CAR AIR CONDITIONER?

http://technoanswers.blogspot.com/2011/10/bad-odor-on-car-air-conditioner.html

How to Recharge Car's Air Conditioner

http://repairhelpcenter.blogspot.com/2011/10/how-to-recharge-cars-air-conditioner.html