I have a 1999 Cobra Mustang that has a ticking noise coming form the front drivers side of the engine. I have tried to research what it could be but there are way to many things people are listing. Taken it to several mechanics but they are about as helpful as doing a broad search on the internet. The noise has always been there from when i bought the car. Would happen when i would start the car in the morning and last 10 to 20 seconds and then go away. then one day at a stop light it started making the ticking noise and has never gone away. Ticking goes with rpm of car as rpms increase ticking increases in speed. Noise sounds like a lifter tapping on cam/valve cover. Pulled cover don't see anything. looked at timing chain don't see any slack that would make me think its a tensoner but i do see small ( if you took a file to a piece of metal) flakes of metal on chain when i turned engine by hand. not sure if this is a sign but coolant light came on for about six months of driving still on. car has about 40,000 miles i stopped driving the car when the noise started happening all the time. I didn't notice any performance changes. Does anyone have any helpful advice or had same issues?