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Engine leak down test

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Old Dec 26, 2009 | 05:40 PM
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Default Engine leak down test
Wondering how to do a engine leak down test on a C5Z?
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Old Dec 26, 2009 | 05:51 PM
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The same way you do on most any gas 4 cycle engine.
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Old Dec 26, 2009 | 08:18 PM
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And how is that?
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Old Dec 26, 2009 | 08:50 PM
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1. Yank plugs.
2. Turn cylinder to TDC that you want to test.
3. Insert leakdown hose in spark plug hole of said cylinder.
4. Pressurize leakdown tester and turn regulator to desired pressure.
5. Read tester gauge and determine leakdown percentage.

Repeat for any other cylinder you care about.
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Old Dec 26, 2009 | 09:35 PM
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http://www.2carpros.com/dia/how_to_c...ompression.htm
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Old Dec 26, 2009 | 09:44 PM
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Originally Posted by dougbfresh
The same way you do on most any gas 4 cycle engine.
This is an OT worthy response.
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Old Dec 26, 2009 | 10:42 PM
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thanks, new how to do compression test just wondering if I could use the same gauge.
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Old Dec 26, 2009 | 11:04 PM
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Originally Posted by bearnest
thanks, new how to do compression test just wondering if I could use the same gauge.
No. Buy a leakdown tester. Jegs sells one.
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Old Dec 26, 2009 | 11:43 PM
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Originally Posted by Chevy Guy
This is an OT worthy response.
but it is the correct one
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Old Dec 28, 2009 | 04:06 PM
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you can buy a leakdown tester at harbor freight at a very reasonable price. With instructions. Good luck!!!
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