Does anyone else get this ticking noise from spark plugs

[mypradogrande Junior Member Find all posts View Profile Close mypradogrande]

I have noticed this ticking recently (separate to the manifold tick) coming from the spark plugs on both sides and just found a video on YouTube of a 4L FJ doing the same thing but after high pressure clean wash in engine bay. For what its worth I haven't ever washed my engine bay nor been through heavy water crossings (Although Perth has been swimming the last few months)

http://www.youtube.com/watch?v=Hq798DOppuE

It can be pretty loud tick under acceleration but windows up you don't hear a thing ! should I be concerned? It had new Bosch platinum spark plugs put in about 15,000km ago.

[krypto Avid PP Poster! Find all posts View Profile Close krypto]

Start with the obvious, check that the sealing washers are correctly in place and that the plugs have been correctly tensioned.

[Corigator Avid PP Poster! Find all posts View Profile Close Corigator]

And that there are no cracks in the leads

[LeighW Avid PP Poster! Find all posts View Profile Close LeighW]

Also take of one of the plug covers and see if there's moister in the tube. Only other thing I can think of is valve noise, how many k"s has the motor done?