Blow Down Testing
 

1995 Pontiac Grand AM four cylinder.

I understand how to do cylinder blow down testing but do not know how to
interpret the results. I would imagine if it lost no pressure, that would be
good.
What if it lost say 10 PSI in one minute is that good? What is good and what
is bad?


Thanks, Scott

Blow Down Testing
 

This is how it's done with general aviation engines:
http://www.littleflyers.com/engcomp.htm

This is one part of an airplane's annual inspection where we owners hold our
breath.

"Scott Buchanan" > wrote in message
...
> 1995 Pontiac Grand AM four cylinder.
>
> I understand how to do cylinder blow down testing but do not know how to
> interpret the results. I would imagine if it lost no pressure, that would
be
> good.
> What if it lost say 10 PSI in one minute is that good? What is good and
what
> is bad?
>
>
> Thanks, Scott
>
>