Fw: [Vwdiesel] Poor compression Q's

[Mark Shepherd]

> How low is low?
> Two together sounds like a gasket
> Are they next to each other?
> As an additional check, check cam shim clearance.
>  Any pressure in water system with cranking?
> Mark
> ----- Original Message ----- 
> From: "Todd Osterbrink" <tosterbrink at verizon.net>
> To: <vwdiesel at vwfans.com>
> Sent: Sunday, November 27, 2005 7:41 PM
> Subject: [Vwdiesel] Poor compression Q's
>
>
> Got low compression in 2 cylinders in a 1980 Dasher diesel.  Thinking bad
> rings, since the performance of the thing went from good to bad within a
> day.  Running bad, missing, lots of blue smoke, and starting hard.
Checked
> pump and cam timing, all in spec.
>
> What could cause piston rings on a 1980 Dasher diesel to go bad?  The
> engine has 85,000 miles on it since rebuild (which included new over size
> Mahle pistons, rings and such).  Could it be something else?
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