Ford Crown Vic, Mercury Marauder, Grand Marquis
97 Merc GM with 160,000 miles.
About a week ago I noticed a short, 1 second brrrrp. noise when starting the engine after it's sat overnight. It dose it once and then it's usually, but not always, fine the rest of the day with no odd noises of any kind at any RPM.
I'm thinking timing chain...