I recently purchased a 2010 Aveo with 46k miles. I've noticed on cold starts that the engine makes a loud noise similar to what I would call a piston slap. The noise then dissipates after the car has warmed up. I took the car back to the dealer and asked them to perform a compression test. The results were 230,230,225,230 psi. I personally haven't seen a 4 cylinder car read over 200 psi, unless it had performance work done to the engine.
Is it common for these cars to have piston slap?
Does 230psi seem like it's a legit reading for this car?
Any help would be appreciated!