Originally Posted by
Russ6334
Not sure I understand how it works then, one assumes you would crank it to get your pressure then the other gauge shows the loss over time?
or am I misunderstanding it’s design?
Apologies never heard of a leak down test before today
The tester measures how much leakage through the valves or pistons and you listen to where the air goes and this will give you a much better guide. If all the air is going past the rings this will tell you that it’s why it’s using oil.
Any good garage should have a leak down tester.
Mark