Diagnostic question

That's helpful. I'll tell my car, and see if it straightens up a little



I've yet to see a reference that says 4% leakdown is normal and 10% being bad. I can see all the valves being bent resulting in fairly even numbers, but most of the reference I'm seeing is like this:
View attachment 1715723545

Personally, I'd figure something was up if I was at 20%. When I did the leakdown test, I listened to the intakes (Intake manifold was off) and never heard any air there. All the air I heard was in the crankcase.

I guess I need to go back and do a compression test.


I agree with AJ. It’s hurt. Those leak down numbers are not good. 3-4% for a good street engine with gapped rings is good. Every point after that just says how bad it is.