--- "Georgios A. Stylianides, PhD" <gstylia@YAHOO.COM> wrote:

> Hi All,
>
> Exhaust system job in progress!
> ....

> 3. I noticed that one cylinder had white powder
> deposits, where the other three were black. What is
> the significance of those deposits?

The one that looks like having white powder deposits is one
that has good compression and good combustion. The one that
looks black is the one that has low compression and needs
work.

David

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