Its the DISA valve. The flap rattles like there is something broken inside and hits the intake. Sounds like a loose screw or a piece of plastic flapping around m. U gotta go and check your intake. There is nothing wrong with the timing chain. Worth inspecting. I had the same issue
Its the DISA valve. The flap rattles like there is something broken inside and hits the intake. Sounds like a loose screw or a piece of plastic flapping around m. U gotta go and check your intake. There is nothing wrong with the timing chain. Worth inspecting. I had the same issue