Possable missfire..???

[s1l3nc3r]

Having a strange sound at around 2K when on overun and slow cruising.

Car drives ok, no codes etc. best way to describe the sound is it sounds like a pulse noise you can hear it in the exhaust tone.

Im thinking it could be a coilpack on the way out as i havent changed them since ive had the car so they are quite old now. Or possible cam possition sensor..??

Any idears or anyone have anything like this before.?

 

[D--R--E--W]

mine done the exact same a few weeks back and a couple days later number 1 coil went then 2 after it lol

 

[s1l3nc3r]

Well changed all the coil packs today.

Didnt cure the noise but seems to run a bit smoother on idle.