I took my Stock 02 Z to the track a few days ago. I had a good ET but my MPH was down.
I checked a few things. I finally pulled the spark plugs an Cyl 2's spark plugs threads were covered in oil. I removed the valve cover an rocker arms and found one push rod was slightly bent. This leads me to want to remove the valve springs to look at the seals. Is there a better way to test this. It never smokes or consumes oil.
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