Just bought this 2004 disco2. Will have full mechanic check up soon. But.. as curious as Iam … was checking a few things and notice a sound when I rev and then suddenly let go of the gas pedal ( in park). I dont know when the spark plugs were replaced last, but will do that this week. Any ideas why the noise?

thank you!

 

I listened to your vid. It does not sound like the usual misfire...sounds more mechanical...like something banging....maybe have someone else rev the engine while you listen to it up front....