Originally Posted by Jason Pittenger
I am referring to the reed valves that sit on the sides of the engine, that dump extra air into the exhaust during decel to burn off unburned fuel.
Those are part of the EGR system, its for emissions not operation and has nothing to do with the popping. The coasting enrichment valves in the carbs are that function.
I did notice that running the idle screw slightly richer than optimal, got rid of the popping.
Thats doing the same thing as the CE valves in the carbs, except running that rich at idle can foul your plugs with any significant idle time.
2006 Honda Rebel Diesel
100mpg, low and slow
1982 Mercedes 300D
Modified engine, 4-speed manual