Quote:
Originally Posted by fanaudical
Suggestion: Post a pic of the leak-down tester you used and your compressor. You need a compressor with decent flow capability for a good test.
I've seen some leak-down tests that were not valid due to insufficient air flow from the compressor.
And there is some variability in leak-down test definitions. Lycoming recommends doing the test at 80psig supply pressure (and this is the reference that I've used for testing my stuff). The one difference is that I do calculate a percentage drop.
https://www.lycoming.com/sites/default/files/attachments/Cylinder%2520Compression.pdf |
The compressor shouldn’t be the problem. I think the gauge, which is 30+ years old, is out of calibration. I’m aiming to get the type that requires one to calculate the percentage drop. And I had also heard a supply pressure of 80-90 psi is the target.