Date:         Thu, 17 Mar 2005 22:03:24 -0700
Reply-To:     camper@TACTICAL-BUS.INFO
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         James Thomson <camper@TACTICAL-BUS.INFO>
Subject:      Re: Compression test - cold vs hot?
Comments: To: Shawn Wright <swright@ZUIKO.SLS.BC.CA>
In-Reply-To:  <4239E049.20282.4D247BA2@swright.zuiko.sls.bc.ca>
Content-Type: text/plain;charset=iso-8859-1

sounds like rings



> As an experiment, I did a compression test on my '88 2.1L from dead cold
> tonight; engine has not been started since November. Readings were as
> follows: 135-135-90-125. The 90 surprised me, as the engine starts and
> runs very well.
> So I then put the plugs back in, started it, and ran for about 2-3 minutes
> to
> warm the oil. I then re-checked the two low cylinders (right hand bank)
> and
> got: 130-155. Is it typical to see a wide spread between cold and warm/hot
> readings? What possible causes are there for this? Lifter bleed down?
> (they didn't make any noise at all, even after sitting for months, thanks
> to
> Amsoil synthetic!). The engine wasn't even hot on the 2nd reading, just
> warm.
>
> Just curious...
>
> ps: This is the engine I will be selling in a month or so, once I get my
> diesel
> conversion parts lined up. If you are interested, and want to drive it
> before I
> pull it out, please contact me for details. (near Victoria, BC.)
>
> Thanks
> Shawn Wright
> http://zuiko.sls.bc.ca/~swright
> '85 Jetta TD (retired)
> '85 Jetta D
> '88 Westy 2.1L
> '82 Diesel Westy
>