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I broke a valve spring (luckly it was a dual spring), I am going to be replacing them soon. Before I did the new springs I was going to do a leakdown test, the cyl are about 7-8% (including the one with the brocken spring)
Is 7-8% too high, or normal with an engine with some miles on it, a couple things about the engine:
Forged pistons.
The car was not warmed up as instructed with the leakdown test because of the springs.
The engine has approx 30k on it, has had a maggie with 10lbs of boost and catek stage II heads all of its life