Welcome, but it sounds like you're also having trouble double posting. If you're so nervous you can't describe what kind of trouble you're having with your Z, you've got trouble all right. Start by describing how long you've had this car, how many miles and when this problem started. Who suggested a compression test and how does it correspond with your problem(s)?

Take a deep breath and don't let your anxiety affect your ability to think rationally. Also, consider posting in the 'maintenance and repair' section and don't double post...