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Compression & Leakdown Test

Old 03-Aug-2005, 04:00 PM
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Compression & Leakdown Test

I need to do a compression & leakdown test on my car. Can anyone recommend a good place that does this in mississauga? And how much does this usually cost?
Thanks.
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Old 03-Aug-2005, 07:27 PM
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do it yourself, very simple and you will learn something....buy the compression tester then u will have it and be able to do one whenever you want, probley the same price as paying someone too...goto princess auto there cheap 20-30 bux i think
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Old 03-Aug-2005, 09:11 PM
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Whats involved in doing this test? And what are the results im looking for? Also what about the leakdown part? I have no clue what that involves.
Where is princess auto? And is it 20-30 bucks for the kit? Or for the test?
Thanks.
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Old 03-Aug-2005, 10:16 PM
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i got my compression tester from crappy tire for $30.
To do a compression test you:
remove the ecu fuse in the underhood fuse box
remove all 4 spark plug wires and 4 spark plugs
screw the compression tester tube into where the spark plug goes
crank the car over 5 or 6 times
check the guage to see what it says and take note to compare with the other cylinders
repeat process for 3 remaining cylinders
The results should be within +/- 20psi of the others. If the numbers are low or inconsistant make sure to have the engine checked out.

A leakdown test is where you put compressed air (about 100psi) into the cylinder with all of the valves closed to measure how much leaks out.

I would imagine that any competant shop would be able to perform a leakdown test for you. In order to do a leakdown test you would need an air compressor with a regulator and a leakdown tester (which aren't as cheap as the compression testers are)
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Old 03-Aug-2005, 10:40 PM
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Sweet. It doesn't sound too hard to do. Thanks for the info.
One other thing though, when doing the compression test, what psi am i looking for on a d16y8?
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Old 04-Aug-2005, 10:24 AM
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I just have some stuff to add to crvtecEG post.

There's a dry and wet test.

When I do a compression test I remove the fuse for the fuel pump, and have the throttle plate wide open.

If you noticed one or more cylinders that the compression is low squirt a little oil into each cylinder and repeat the test. If the cylinders with the low compression increase a lot then there is a problem.

A leakdown test will verify the problem of the compression test.

A simple head gasket check is start the engine up (idle) for about 5 - 10 minutes with the rad cap off. Watch for bubbles in your coolant.
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Old 05-Aug-2005, 03:36 PM
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Anyone konw what the compression should be at for a b16a2?
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Old 06-Aug-2005, 10:57 AM
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I would think around 125psi.
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Old 06-Aug-2005, 10:59 AM
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more like 180
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Old 08-Aug-2005, 12:00 AM
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i tried doing this but i couldnt even get my spark plugs off i turn the plastice boot and pulled it but it wouldnt come off is there any special way to do it?
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Old 11-Aug-2005, 02:55 PM
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pull real hard
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Old 11-Aug-2005, 03:12 PM
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Originally posted by italstallion
i tried doing this but i couldnt even get my spark plugs off i turn the plastice boot and pulled it but it wouldnt come off is there any special way to do it?
you may have to unscrew the spark plugs.....
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Old 11-Aug-2005, 04:37 PM
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Originally posted by Fug


you may have to unscrew the spark plugs.....


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