Originally Posted by monkey_wrench
Anybody have some before and after pics?
I took my intake manifold off to change out my starter, and even at 100K miles, my valves, though never cleaned, were absolutely spotless.
Just curious what other folk's intake valves look like that they need walnut blasting.
you post this statement multiple times, and multiple times i wonder why no one has told you this.
N52 engines, like the one in your car, are not direct injected. therefore, gasoline washes over the valves and keeps them clean.
never need your valves cleaned.