Hi everybody, I need your help. Yesterday in the nice weather again the convertible had outside. 1966 Olds with 425cui BB. Carburettor is the original 4barrel quadrajet. Driving there was everything great. Ca 15km Back after about 3-4 hours he did the following: If you give gas leg load change, it pops in the exhaust, or rather a dull exhaust or so, no loud bang. At the same time, at the moment of the noise completely the power is gone, as if it were out, but only for a second And then he goes forward again. Take away gas and give gas again, and the same game.. Someone’s idea? I had the last time, possibly. Could it be related to lukewarm engine, but not sure. Greetings Marc.