1980 Honda GL 400 "exhaust backfire acceleration" Questions

acceleration. rebuilt both carbs, adjusted acc. pump. when i synced the carbs, the gauges were jumpy, could not get them to steady. one exhaust pipe stays cool much longer than the other and backfires

...exhaust under acceleration is rare. If he ignition is misfiring, unburned fuel and air mixture is exhausted into the exhaust system. The next time the plug fires, it ignites this mixure. In other ...

...in the head(exhaust ports),air is getting into your exhaust system and it mixes with the unburnt fuel and ignites causing the backfire,i replaced copper seals(about $2nz each) and problem went ...

...backfire through exhaust when decelerating Runs fine during hard acceleration. Thought it was water in fuel, but dry gas did not solve the problem. Moisture (rain) made it worse. Intake: Lean, or ...

acceleration.ihave changed plugs,coils &wires. Backfiring on deceleration is air getting into the exhaust and igniting unburned fuel. You probably have an after market exhaust on. You need to seal

...tank and cleaned the carb and it seams to be better but it still backfires on acceleration like a gun shot. make sure there isnt any thing in the air box or exhaust little critters like to nest in ...

...backfire while decelerating. Bikes have much shorter exhaust and much less sound control so it is much more obvious. If it is running good while idleing and while accelerating it's probably not a ...

...650 backfires when idling, when warmed up, has good acceleration, but when backing down it will pop or backfire. Most likely a air leak in the exhaust system, check the gaskets and pipe

...Backfire and run poorly Backfiring,Wont Idle,Missing on acceleration,Just running awful then smooth out then back to the same thing,But always popping through the exhaust when I let the throttle up. ...

...exhaust and then it would not start at all. So i changed float level to run leaner which worked besides a backfire when slowing down and so i went for a 250 km round trip through mountains and long ...