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How well the combustion chambers hold pressure. It's a good indication of overall engine wear and condition.

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16y ago

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How to tell if your timing chain is broken?

car wont run if the belt is broken ! Run a compression test.


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Have a compression test run. This will tell you allot.


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Run a compression test. If compression in all cylinders is low, it's probably the timing chain.


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Why is compression in a car engine important?

Well the only way your car will work is if it has compression your silenders haft to have the compression to go back down and make power if you are working on a car you MUST chack your compression and make sheer that you enuf if you don't something is wrong ( head gasket or a crack block more then likely ) if you tell us what motor you have we can tell you how much you need


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A compression test is a good place to start.


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It probably won't start and run and a compression test would show very low, if any compression in all cylinders.


If your customer said his car overheated and you determine the water pump thermostat and belt needed changing is it customary to do a compression test not a pressure test before doing it?

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Why doesn't my car have any power after it overheated?

Usually when you're continuing to operate a severely overheating car, your rings are destroying themselves on the cylinder walls. This results in less compression, oil consumption and loss of power. Assuming this is the problem, having the engine rebuilt is the only solution for this. You can take it to a mechanic and ask them to check the compression in your cylinders, and they will tell you if this indeed the problem. A compression test won't be expensive... having the engine rebuilt is another story.