Everything was fine until the other day my 2003 600 f4i was making a clicking noise when i was compression breaking or engin breaking down shifting to slow down but it didnt really matter what the rpms were at ot would jist click click (2 seconds) click.........click...... Down shift to second (4second )click........click...click.. And it sounds like the same click you head when you shift up from the peg. .. Thats been going on for about 3 days now and today it started exhaust popping in 1st gear only.. I dunno what's going on. Anyone have similar problems?

 

Did you find out what the issue was?