i keep hearing about it and no one tells me!!! what do you do? what purpose does it give?? thanks!!

 

ooops posted as a poll not a post i know i know!!

 

It's self explanatory, but a leak down or "cylinder leakage" test is similar to a compression test in that it tells you how well your engine’s cylinders are sealing. But instead of measuring pressure, it measures pressure loss.

 

http://www.c-speedracing.com/h...n.php

 

wow thanks really helpful!!