As my boss would say "schmarblefarbe."  Which is technical jibberish.  The
only way to measure effective cylinder efficiency is via a compression
test.  I presume that's what they did...

----------
> From: Christopher M. Smith <csmith@sdsc.edu>
> To: Multiple recipients of list <vanagon@lenti.med.umn.edu>
> Subject: Power Balance Test ?
> Date: Tuesday, December 10, 1996 6:27 PM
> 
> 
> What is a "Power Balance Test" ? How is it performed ? What does it tell
> you ?
> 
> I recently took my aircooled Vanagon into a new shop to get my air flow
> sensor adjusted. The process of adjustment involved gas analysis and they
> found something they didn't like ... high Hydrocarbons (pre-cat
> converter), so they performed a "power balance test". I missed the gist
of
> what the tech was explaining, but did catch something about the "lack" of

> power. 
> 
> Power Balance results were:
> 
> #1 cylinder: 73
>  2         : 62
>  3         : 16
>  4         :  5
> 
> I do know that the head seals on the #1 & 2 cylinders are leaking, which
> the tech mentioned. But he also mentioned that there was a "big" problem
> with the #3 & 4 side of the engine.
> 
> Any clues ?
> 
> Thanks, Chris
>