I don't know if this has been covered in the threads that Kerry is alluding to...

But make sure to inspect the breather cover on the inside of the valve cover. It may be a legitimate culprit in the 'clogged PCV system' theory

If it is not sludged up, try removing the the breather hose on the VC and replace it w/ a short length of tube. If your car doesn't puke, then perhaps the blockage is in your oil seperator / air filter etc..

the last thing I can think of is incorrect oil level. Next time you change the oil, measure the amount you put in. Record where it sits on your dipstick.

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