Blown vlave seal symptom ?

[solidsnak3]

Can someone list the symptoms of a blown valve seal. What should someone look for?

Thanks!

btw yes i have searched.

 

[mike302]

smoke on start up

 

[IronTerp]

A ticking noise at idle that increases in volume and possibly intensity as engine rpm's elevate..........

 

[solidsnak3]

A ticking noise at idle that increases in volume and possibly intensity as engine rpm's elevate..........

i have never heard of this one dwight. might be hard since there so much noise under the hood as it is. how do you differ the sound? where would it come from?