i should have known better than to brag on the napa starter that i have that lasted for years.when i hit my starter button i hear a weird thump before it starts cranking.whats odd about it is it dont sound like the normal starter clanking noise,like when it kicks out or hits too hard.it almost sounds like a compression noise like the engine tried to start for a split second before it starts cranking.other than that it starts rite up. any ideas,also i had to tighten my drivers side motor mount,it must have vibrated loose or i didnt have it tight enough.i dont know if that had anything to do with it or not.