What size pilot jet should I use and main jet. I have v&h exhaust k&n air filter with SE 203 cams I have a pilot jet 48 in there now with a 175 main jet but when I adjust the air mixture screw it does nothing. It back fires in the carburetor and has a pop sound through the exhaust when I let off the throttle.
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You can go up to a 50 and 185 main. Should not be too much for your application. Make sure your intake seals are good and that you do not have any exhaust leaks.
Related Fix My Hog Videos:
https://www.fixmyhog.com/videos/carburetor-rebuild/
https://www.fixmyhog.com/video/twin-cam-harley-intake-seals-replacement-008713/
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I am glad someone has asked a carb question as my very low mileage '89 Electra Glide Sport Evo is running rich. The brand new plugs are quite black after a run. It has a Stage One cam and Screamin' Eagle Keihin non-CV Carb fitted, as well as louder fish tail pipes. The pipes are too loud for my neighbors so I am going to revert to stock. I am also sourcing a new air filter as the one I have fitted is probably the original K&N! After changing the filter are there any adjustments possible with the Keihin Carb I can make? I have an H-D Service Manual but it is very unhelpful in this regard. I'd welcome any comments from the team or from other owners. Ride Safe.