Generation III Internal Engine 1997-2006 LS1 | LS6
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Plz help me interpret these compression test results

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Old Jan 11, 2014 | 09:42 AM
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Default Plz help me interpret these compression test results

1) 135 150
2) 145 145
3) 150 160
4) 160 160
5) 160 165
6) 150 150
7) 145 150
8) 140 145

The first value is dry. The value beside it is wet for that cylinder.

The first value "1)"starts from driver side front engine cylinder #1. Then the value underneath it "2)" is the cylinder next to it and so forth.

Back engine
8 4
7 3
6 2
5 1
front engine

This is of an ls1 engine i want to buy from the junk yard.
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Old Jan 11, 2014 | 10:19 AM
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Was the TB open?
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Old Jan 11, 2014 | 11:44 AM
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Originally Posted by 96capricemgr
Was the TB open?
Is TB throttle body? If so then no, it wasn't open. However, motor had no air box...and i had the throttle wide open while doing the test.
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Old Jan 12, 2014 | 06:33 AM
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you guys must really hate compression test questions
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Old Jan 12, 2014 | 07:34 AM
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Pretty well matched, IMO.
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Old Jan 12, 2014 | 12:10 PM
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Originally Posted by Freefallin
you guys must really hate compression test questions
Originally Posted by Old Geezer
Pretty well matched, IMO.


I'd run it...
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