[s-cars] RE: Engine Compression Test (Hot or Cold?)

[Fred Munro]

To add to Igor's excellent advice, crank the engine until the compression
reading no longer increases. If you don't crank long enough, you'll get
variable, low readings.

Fred Munro
'94 S4


-----Original Message-----
From: s-car-list-admin at audifans.com [mailto:s-car-list-admin at audifans.com]On
Behalf Of Igor Kessel
Sent: November 25, 2002 10:05 AM
To: James Murray (LMC)
Cc: 's-car-list at audifans.com'
Subject: Re: [s-cars] RE: Engine Compression Test (Hot or Cold?)


"James Murray (LMC)" wrote:
>
> This message is in MIME format. Since your mail reader does not understand
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> Meant to have the subject say "Hot or Cold"
>
>                 -----Original Message-----
>                 From:   James Murray (LMC)
>                 Sent:   November 25, 2002 9:44 AM
>                 To:     's-car-list at audifans.com'
>                 Subject:        Engine Compression Test (Warm or Hot?)
>
>                 Does a compression test need to be done while the engine
is warm? Or can it be done while cold?
>
>                 I did one while the engine was cold and got a fairly
consistant 11 or 11.5 bar on all 5 cylinders. Specifications are between 9
Bar and 13 Bar and the wear limit is supposed to be 7 Bar, while max
difference between cylinders is 3 Bar.
>
>                 Just wondering if I need to re-run the test to ensure I
got valid data?
>
>                 Cheers, /James
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Warm engine, injectors disconnected, all spark plugs removed, throttle
wide open.

--
Igor Kessel
two turbo quattros
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