2007 Ford Mustang Engine tapping sound on start up in idle

2007 FORD MUSTANG
36,350 MILES • V8 • 2WD • MANUAL
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PAV80
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I recently had my 1st oil change since my warranty expired and I had Mobile1 synthetic 5W20 put in. Shortly after I noticed when I start my car up in the morning that there is minor engine tapping noise when the RPM's lower to about 900-800 and stay there. The sound goes away aftger I start driving and when I start my car up again later on that day I don't hear it at all u ntill the next morning. Can it be something serious? I've taken really good care of my car and hardly ever red lined it.
Dec 16, 2008 at 8:43 AM
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RASMATAZ
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Sir-You have a valve lifter/s leakdown problem-every morning you'll hear that ticking/tapping sound till the engine warms up this is the symptom-BTDT.
Dec 16, 2008 at 8:59 AM
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PAV80
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RE: Sir-You have a valve lifter/s leakdown problem-every morning you'll hear that ticking/tapping sound till the engine warms up this is the symptom-BTDT.

What is BTDT and is it bad for the engine? How can it be fixed?
Dec 16, 2008 at 9:21 AM
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