01-01-2023, 07:16 PM
Thanks, John and Chris for your replies. You have confirmed my suspicion that retarded running tends to be quieter than advanced running.
The noise has always been there since I bought the car two years ago. I have done 500 miles in it. The previous owner had only done about 500 miles after having the engine professionally rebuilt. The noise does sound like bottom end rumble, which I wouldn't expect after a professional rebuild. Hence my asking about whether ignition retarded could cause the noise.
The noise has always been there since I bought the car two years ago. I have done 500 miles in it. The previous owner had only done about 500 miles after having the engine professionally rebuilt. The noise does sound like bottom end rumble, which I wouldn't expect after a professional rebuild. Hence my asking about whether ignition retarded could cause the noise.