| Re: Cylinder leak-down test procedure (with percentage gauge)
First, I did a compression test and for all cylinders got reading of 195-200.
Then I did the leak-down test and per the gauge, got readings right in the center of "low" leakage for all cylinders. The gauge indicates that the middle of "low" is about 30% OK for their gauge but lousy by other 100psi gauge tests.
I did each of these tests while the engine was at about 60 degrees so I understand these readings would be even higher/better if the motor was warm.
The attached photo shows the gauge dial face. You can read the numbers if you squint just right <grin>
Then to be paranoid, I cranked up each cylinder to ~80psi and listened for any leaks, hisses, gurgles in the coolant etc. and - nada.
Sounds like the motor is A-OK and I should go ahead with my valve seals and not tear down the motor? |