Backfires at decelaration,and popping at steady pace of travel

Do you have a speed limit switch on your foot pedal? My Pfaff does....
Cheers,
Kelly
Embroidery Services
San Diego, CA

NEADS A TUNE UP,ALSO PUT SOME INJECTOR CLEANER IN YOUR GAS TANK FIRST

Usally nothing to worry about. Some after market mufflers will cause it to do this. I had a Triumph 900 that back fired and crackled when i decelerate, i had staintune mufflers on it.
Check the color of your spark plugs for signs of running rich or lean.

the bike will like backfire/misfire and if i hold the throttle steady it will backfire like 2 times again....and it does this while riding at a steady pace too...it just started it didint do it a week ago. i didnt change anything except a new air filter..fuel screw is 2.5 turns out . the timing valve clearances and everything is in spec. is this a sympton of it being rich or lean? and it doesnt do it on chokeYes, it could (and probably is) be an air leak. Check to be sure the carb is tight in the intake manifold, and make sure the hot-start isn't loose and is sealing properly. Also make sure all of the exhaust system joints are tight, an air leak in the exhaust will make a four-stroke pop and backfire like an old work truck with no muffler...,,,

the bike will like backfire/misfire and if i hold the throttle steady it will backfire like 2 times again....and it does this while riding at a steady pace too...it just started it didint do it a week ago. i didnt change anything except a new air filter..fuel screw is 2.5 turns out . the timing valve clearances and everything is in spec. is this a sympton of it being rich or lean? and it doesnt do it on chokeYes, it could (and probably is) be an air leak. Check to be sure the carb is tight in the intake manifold, and make sure the hot-start isn't loose and is sealing properly. Also make sure all of the exhaust system joints are tight, an air leak in the exhaust will make a four-stroke pop and backfire like an old work truck with no muffler...,,,

the bike will like backfire/misfire and if i hold the throttle steady it will backfire like 2 times again....and it does this while riding at a steady pace too...it just started it didint do it a week ago. i didnt change anything except a new air filter..fuel screw is 2.5 turns out . the timing valve clearances and everything is in spec. is this a sympton of it being rich or lean? and it doesnt do it on chokeYes, it could (and probably is) be an air leak. Check to be sure the carb is tight in the intake manifold, and make sure the hot-start isn't loose and is sealing properly. Also make sure all of the exhaust system joints are tight, an air leak in the exhaust will make a four-stroke pop and backfire like an old work truck with no muffler...,,,

the bike will like backfire/misfire and if i hold the throttle steady it will backfire like 2 times again....and it does this while riding at a steady pace too...it just started it didint do it a week ago. i didnt change anything except a new air filter..fuel screw is 2.5 turns out . the timing valve clearances and everything is in spec. is this a sympton of it being rich or lean? and it doesnt do it on chokeYes, it could (and probably is) be an air leak. Check to be sure the carb is tight in the intake manifold, and make sure the hot-start isn't loose and is sealing properly. Also make sure all of the exhaust system joints are tight, an air leak in the exhaust will make a four-stroke pop and backfire like an old work truck with no muffler...,,,

make sure the projector and the video source have a grounded outlet that are separated from anything with a motor.