dennisdarrow
#4869 Earned Lifetime mem
After a warm up run, and synchronizing the carbs at idle (and leaving the idle mixture screws at the recommended setting: 1/2 turn), I still get some popping, during decelleration. .
The 1/2 turn out of the idle mixture screw is merely a starting point. Try to isolate which carb is doing the popping and then come OUT perhaps 1/8 of a turn on the mixture screw.
While you have your sync device on, you are adjusting your idle with the mixture screws to where they run the best with the idle screw set for the speed or RPM? Turn the screw in till the cylinder falls off a bit, then back out to where it runs the best, then the plus 1/8 turn refered to above.........I DO NOT ALWAYS DO THIS TURN THOUGH........I wait for if it shows up in a test ride......
A downgrade at idle really is a good place to check this out. My driveway/road is 1/2 mile long on a 12 to 18 degree grade. It really tells me when I have things spot on in relation to the no throttle popping situation..............
One will have a great sync and then bang zoom on the test ride this popping shows up and one just pulls over, gets out a small screwdriver, makes the small adjustment to the idle mix and that big smile grows even wider.......God bless.......Dennis