Low engine compression causes and diagnosis! Head gasket, burnt valve, piston ring issues? This video will help you find out why you have low cylinder compression.

Follow along as I test out different products on my Volvo v70XC in the quest for the best!

Don't bother with the cheap compression testers, OTC is a good and reliable tester. Find it here.
https://amzn.to/33e4QOD