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07 Sporty Wont maintain steady throttle jerky

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Old Aug 9, 2022 | 04:49 PM
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HDRIDER7
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I sprayed around the intake with WD-40 dry lube because i couldnt find carb clean and it seemed like the idle went up when i did but im not sure. Also exhaust ports felt like there was no air coming out. Checked the air filter and it was a little dirty. Wonder if it has ever been changed. Looks like the stock one. Bike has 5500 miles on it.
 
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Old Sep 16, 2022 | 04:48 PM
  #12  
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I ended up changing the champion plugs that where in there with NGK iridiums and it seemed to make a world of s difference, no more bucking and popping. All i have to do now is change the air filter out because it is somewhat dirty and it is the OEM filter. However the champions that i took out where very white on the porcelain, which seems to me a lean condition. I check 02 sensor voltage readings thru FP3 and they where all in spec. Mind boggled
 
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