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Topic: Compression Test (Read 9513 times)
vdubnation
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Compression Test
« on: June 16, 2013, 09:23:54 AM »
hows this compression test look
Starting from cyl 1 to 6.
118,125,130,120, 125,145
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QuattroEd
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Re: Compression Test
« Reply #1 on: June 16, 2013, 11:33:21 AM »
how do the spark plugs look?
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vdubnation
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Re: Compression Test
« Reply #2 on: June 16, 2013, 12:29:36 PM »
Quote from: QuattroEd on June 16, 2013, 11:33:21 AM
how do the spark plugs look?
Pretty dry and clean
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quattroGmbH
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Re: Compression Test
« Reply #3 on: July 29, 2013, 09:36:24 PM »
What is the model of your car? 130psi is the spec wear limit for the 2.7t, unless you have compression lowering head gaskets those values are rather low.
«
Last Edit: July 29, 2013, 09:41:59 PM by quattroGmbH
»
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Triangule
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Re: Compression Test
« Reply #4 on: August 20, 2013, 10:55:59 PM »
How did you get this value ?
engine hot or cold ?
now you should add some oil in each cylinder and have a look if there any difference.
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userpike
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Re: Compression Test
« Reply #5 on: August 20, 2013, 11:42:59 PM »
what is the compression spec for the motor?
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vdubnation
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Re: Compression Test
« Reply #6 on: August 21, 2013, 06:19:51 AM »
Found out the person doing the test didnt remove all the spark plugs a healthy motor should be around 160
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Triangule
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Re: Compression Test
« Reply #7 on: August 21, 2013, 11:17:35 PM »
have a look if you have some external oil leak.
Also start your engin and put your finger at the top of the tube where you check the oil level.
if you have some air pressure, this is not a good sign.
When an engin is losing is compression, the pressure on the top of the piston will go under it, this is killing step by step the gasket and different oil leakage are apparing.
if you add some oil inside the compression chamber and redo the compression test, the oil will help to seal and if the compression rise, then you have the answer to your question.
When you make the test also you need to defind if the leakage is coming from worn valves seats or piston rings. this could have closes effect with the compression gauge.
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