[jwakil]

I did a leak down test on my engine, and while three of the cylinders were solid (2-5% leakage), I got three others with 15-25% leakage. The bad cylinders were 2, 4, & 5, so one on the left side of engine and two on the right side. For all three of these bad cylinders I heard kind of a pulsing, gurgling sound coming from the upper, LEFT side of the engine. Hard to make out but close to the top valve covers on the left side. No significant sound from anywhere else. What could this mean?