It's a 54 235 with Roch carb, it idles good but I have a nice popping sound inside the carb. I've checked the timing three times and brought the engine to TDC and the ball bearing was right on the money. I checked where the pointer was inside the dist and it was pointing where I have #1. I then checked my firing order, removed my plugs checked the gap. Everything was good to go. I also pulled the carb apart and built it/ cleaned it. Any help anyone can give would be greatly appreciated. Thanks