Popping and loss of power on deceleration - ZX Forums
 
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post #1 of 9 (permalink) Old 12-25-2013, 11:23 PM Thread Starter
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Popping and loss of power on deceleration

ok so I have recently just started having a problem with my zx11 when accelerating ill get a couple pops and commentary loss of power and I have no idea why but I suspect its because the carbs are running rich based on the fact that when its running it gives off a strong smell of exhaust but Idk why it would just start after months of riding with a rich mixture.
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post #2 of 9 (permalink) Old 12-25-2013, 11:31 PM
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Typically popping on deceleration means it is lean. Your title and the actual post say two different things though, decel and accel. Clean the carbs and I bet you'll be happy again

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post #3 of 9 (permalink) Old 12-26-2013, 12:15 AM Thread Starter
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It actually does both. When I com of the throttle itl pop a little but the last few days I have noticed that after warming it up (its very cold in reno nv this time of year) il go down the road at steady throttle and all of a sudden get a pop and a loss of power then a pick up then a pop and itl clear up and be fine.

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post #4 of 9 (permalink) Old 12-26-2013, 12:20 AM Thread Starter
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I say rich because I'm spitting a small amount of black out of my pipes as well as see that the pipes have black soot in them not to mention the smell.

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post #5 of 9 (permalink) Old 12-26-2013, 05:51 AM
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A lean condition can pull un-combusted fuel through to the exhaust pipe, which will ignite on the hot exhaust. I know I'm probably not explaining it right, not to mention, I could be totally wrong. I'm sure someone else will chime in later on and make it more clear

Read and follow factory pro's carb tuning guide. It's a bible for carbs.

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post #6 of 9 (permalink) Old 12-26-2013, 12:57 PM Thread Starter
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I will and thanks for your input up prob going to tune the carbs this weekend when I do my valve cover.

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post #7 of 9 (permalink) Old 12-26-2013, 03:43 PM
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Backfiring can be caused by lean or rich mixture but it could be an ignition problem also. Chances are its a carb issue but...

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post #8 of 9 (permalink) Old 12-26-2013, 05:27 PM Thread Starter
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Yeah I checked with all the local shops and I came across one that actually looked at the bike and told me to check the valves first but thinks one or two of the carbs are off.

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post #9 of 9 (permalink) Old 12-27-2013, 04:27 AM
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I might throw a new fuel filter in there too, especially if it hasn't been replaced in ahwile.

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