test the compression in all cylinder bores to rule out the valves or for novice home mech. take the cylinder head in to a machine shop to have a compression test done.
A bent valve will be noisy, each time it is hit by the cam it will bang, the cylinder will not burn fuel and you may even have burning oil.
You will most liklely have a MIL light and a code for emissions like O2 sensor and/or cylinder misfire because of the unburnt fuel making the cat hot, but it could also be an intake valve so you could have backfiring through the intake and rough running for sure.
The valve cover on a typical engine is a non wearing part. If it were damaged it could be bent, warped or cracked and could be the source of an engine oil leak.
warped valve cover. bad gasket. cracked valve cover cracked block
As I know, they won't be performing in Warped 2013.
possible bent, warped, or torched valve - bad valve seat - or worn valve guide
The head will need to be inspected at a machine shop. They can tell you if it is warped or cracked.
Check the valve cover gasket, if not that you may have a warped head.
No one will know who is playing warped until late november/december for 2011. He is playing 2010 warped however, so go see him this year.
Get a mechanic to do it. You obviously have no idea as to the complexity of the task. e.g valve stem seals, valve seats, warped head tolerances etc.
No, if there is coolant in your valve cover it'll be mixed with oil. You blew your head gasket, possibly warped or cracked your head. It may look like coolant is leaking from your valve cover but it's your intake gasket leaking.
First of all how do you know your head is warped cracked or no good lets start at the beginning
Some do... There's a few indoor ones, and there's a few tents that may have Wi-Fi. So if you know where your location's Warped is going to be at, call them (Not Warped Tour) and find out if they offer Wi-Fi. Usually not, though.
It is not known what Vans Warped Tours email address is. There are so many fake email addresses that really know one knows.