New Leak Down Tool Help ...
 

I am trying to use my new leak down testing tool from HarborFreight. I hook everything up and I can hear the air through the oil filler but the gauge reads 0% leakage? I can hear it leaking so I know it is not zero - is the tool broken? (it is HF after all) What is the typical pressure when zeroing out the % leak down gauge? Mine reads 12 psi - seems low but the pressure may be irrelevant when determining leak down?

Thanks!

See my answer in the tech section .

When I hook everything up it says to adjust the pressure so the % leakdown gauge reads zero - where it stays. HELP?

Please reply on the Tech forum thread.

http://forums.pelicanparts.com/porsche-911-technical-forum/412062-using-new-leak-down-testing-tool.html