So I've started to develop a noise under the hood. Someone who heard it said right away it sounds like an exhaust leak. It starts as soon as I start the vehilce but is most audible when the rev's are dropping. It goes away when it warms up but comes back very quickly (2-3 minutes) when it's sat which leads me to believe the only thing that cools down that quicker are headers and exhaust so...how do I diagnose where it would be leaking?
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Originally posted by cale View PostSo I've started to develop a noise under the hood. Someone who heard it said right away it sounds like an exhaust leak. It starts as soon as I start the vehilce but is most audible when the rev's are dropping. It goes away when it warms up but comes back very quickly (2-3 minutes) when it's sat which leads me to believe the only thing that cools down that quicker are headers and exhaust so...how do I diagnose where it would be leaking?
Of course, the engine must be cold for this, and cannot be running longer than a minute. The headers are hot within a minute of running, so you gotta work fast.
You can listen underneath the hood - exhaust leaks have a very distinct sound. I have a few on the underside of my car, and can feel them with my hand.- Sean Hayes
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