I just bought a leak down tester to test my Kent motor. The unit came with a gauge that is marked in percentages, ie. 10%...20%...30% etc.
My question is, if the incoming pressure gauge reads 50 psi and the gauge measuring the leak down reads say, 10%, does that mean the cylinder is leaking 5 psi?
And, does it really matter what the actual pressure leak is or are we interested primarily in the percentage leak?
Thanks for you help.