I have a 02 trailblazer 250 I did a comperssion test on it because it wont start. It showed it was at 60psi I know it should be alot better,not sure what? But would that be Rings and head gasket or am I missing something??

 

Welcome to the forums.

Anything less than 90 psi would call for a rebuild. Optimally, you're looking for about 120 psi.

 

thank you!!! that is what I thought

 

you will lucky to get it to run below 100 psi. you might need a complete top end job. you will need to tear it apart to find out. imo