I honestly Cannot remember the exact issue resolution. I think there was just residual air in the lines that worked itself out. I will say that if you start hearing that "air sucking" noise under the hood (engine filter) there is a significant air leak that needs to be addressed. Similar process to changing the fuel filters. If the sound persists and it is still loud and "Crackling" you have an air leak somewhere.
What was it.
I honestly Cannot remember the exact issue resolution. I think there was just residual air in the lines that worked itself out. I will say that if you start hearing that "air sucking" noise under the hood (engine filter) there is a significant air leak that needs to be addressed. Similar process to changing the fuel filters. If the sound persists and it is still loud and "Crackling" you have an air leak somewhere.