Hello and I love all the info from this site as I have learned a lot from it. I have a question about my carb. I have a 1999 wide glide twin cam 88. At low speed, in first and second gear, going slow I get a hesitation and popping back through the carb and it seems as it’s gotten colder it happens at around 55mph also. I’ve followed your video and took the carb apart and cleaned it but it makes no difference. The bike has a big sucker air cleaner and screaming eagle open exhaust and I noticed the pilot jet was a 42 and the main is 165. My clymer manual states that I should have 65 pilot and 190 main. I feel like it is too lean with the factory but I am unsure of such a big jump in size from what the clymer manual says. Should I rejet or try to find a stock air cleaner setup and see if that fixes the problem. What Harley carburetor jets should I use? Thanks for your time.
Not exactly sure why your m/c was ever jetted so lean. 42 & 165 are small for most evolution motors. Anyway, assuming your intake is sealed and your carbs accelerator pump is functioning correctly; we would suggest moving up to a 46 or 48 pilot jet and a stock 190 main jet. Play with your mixture screw and pay attention to the coloring of your spark plugs. You really can’t get into any trouble. Good luck
Carburetor Video Class