1. Home
  2. Pontiac Cars Forum
  3. Blow Down Testing

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

Reply to
Scott Buchanan
Loading thread data ...

This is how it's done with general aviation engines:

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

Reply to
tom418

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.