noisy motor cruising goes on acceleration

[d40 rx]

Have checked air box nothing unusal. Did notice driving home in the rain that the sound was much better. Had a look at the pulleys and there is a lot of gunk in the grooves. Could this make a loud tick/ rattle noise? This sound is constant at cruising speeds and goes when i accelerate.

 

[ourd40]

Did you start another thread asking the same thing?
There is no need to make another on the same thing!!