Classic Mustangs (Tech)Technical discussions about the Mustangs of yester-year.
Welcome to Mustang Forums!
Welcome to Mustang Forums.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
Hey guys. Ive had a tapping noise coming from my stock 289 for a while now. I can hear it louder now after I put a new exhaust system on, and its very noticeable. I was wondering if anybody could diagnose the problem as Im guessing its not normal for this to be happening. You can hear it clearly in this video. The car was in drive and I was hitting the gas lightly. Its much quieter when the car is idling in park.
Sounds like an exhaust leak. Not just from the type of sound, but firstly it's WAY too fast to be valvetrain related(valvetrain noises are at half engine speed). And it doesn't sound bottom end mechanical. Does the sound change once the car warms up?
Who cares how much horsepower it has, all that matters is how fast it goes!
Untested 331, lots of suspension, chewing up corners.
The frequency of the sound depends on how fast Im going/RPM. The more I hit the gas, the more frequent the tapping. If I slowly get onto the gas, it taps slowly. Its hard to tell in the video because Im holding it at pretty much the same RPM the whole time.
PS: This sound was here before the new exhaust, but its more noticeable now because it is amplified by the louder exhaust system.
Im going to annotate the youtube video for when I decrease the RPM and when I put it in park, so you can tell the difference in sound.
This forum is owned and operated by Internet Brands, Inc., a Delaware
corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford
Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor