Oh boy. So I have a high pressure fuel pump for my Vortec SC. This thing from day 1 has always been super loud. Every time you get in car, turn the key to let it prime before starting the engine it screams under the car for 2 seconds. Well, about 3 days ago it stopped screaming/whining loudly and now it sounds more muffled. What do you think is up? I believe it's still working as the car doesn't run any different.