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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Proper throttle response???
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[QUOTE="canyncarvr, post: 664445, member: 16552"] There is quite a difference between the two (plug loading and carburetion). If your plug is loading up (due to whatever reason....wrong plug, bad plug, weak ignition, bad fuel, too much fuel, etc) the bike will misfire when you crack the throttle. 'Misfire' in this case meaning it [b]won't[/b] fire. Surprisingly, this state of affairs seems to be often confused with over-rich carburetion. Not exactly. Maybe the plug loaded up in the first place due to too much fuel, but the burbling, misfiring mess you get as a result is due to ignition failure. The bike in that case is 4-stroking...firing every other time like a 4-stroke does, not every time ('time' being a TDC ..top-dead-center..event). [b]IF[/b] you are experiencing plug loading due to excessive fuel it is more likely a needle problem than it is a pilot circuit problem. Well, unless your pilot circuit is [b]way[/b] off. All of the carb circuits work together and thus overlap quite a bit. A too-far off main can effect the idle circuit and thus off-idle throttle response. Trying to resolve such a jetting situation by turning the air screw is a waste of time. If your bike is jetted fairly correctly, there will be [b]no[/b] plug loading problems from carburetion. Out of the box, the kdx will indeed have loading tbls in most situations. .....which is why rejetting is such a large benefit. You might try a different plug. A BR8EG is a good choice. Any new plug...even a standard fat electrode/nickel ES plug will run better for a little while. See if that clears up the hesitation you are experiencing. You should have none, [b]nada, [i]zero[/i], zip[/b] hesitation in the situation you describe. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Proper throttle response???
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