Backfire through Carb (1 viewing) (1) Guest
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TOPIC: Backfire through Carb
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Backfire through Carb 3 Months, 1 Week ago
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I just installed some quite baffles in my 3" HK now I get a loud backfire through the Carb just when I hit the gas but not every time is it to lean or rich and will the accerator screw or pms adjust it? |
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2004 Midnight Star
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Re:Backfire through Carb 3 Months, 1 Week ago
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Usually means lean.
PMS should be adjusted using the in/out technique to find the spot where revs are the highest.
You might want to also turn the accelerator pump screw in or out 1 turn and see which works better.
Doc |
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Re:Backfire through Carb 3 Months, 1 Week ago
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I had the same problem after I put on my bubs, ported intake, dyna & jet kit. I found that if I turned out my pms a half turn it fixed the problem. The thing is that it increased a different problem, when I am riding at a steady no load rpm approx 2000-2500rpm in second or third gear. The bike seems to miss almost like one cylinder is cutting out? I think its a jetting problem to due with the idle circuit & main, but carbs are my weak area. I have temp improved it by running 92 0ctane (with 2oz of seafoam)& turning the pms in until it just starts to backfire tru the carb & then turning out 1/8 turn. ITs running better & has lots of power, but that miss is bugging me. |
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Re:Backfire through Carb 3 Months, 1 Week ago
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mine has backfired though the carb since the day i took it home from the dealer and it has been back.they tell me that these bikes are known for doing that.actually thats how i found this website in a search to try and figure it out.and it ony happens when you are gonna downshift and you crack the throttle fast.i have no clue but i am learning more everyday. |
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screwy louie
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Re:Backfire through Carb 3 Months, 1 Week ago
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Hello!
As good OL' Musky pointed out to me when I first got my R*, these bikes do not like to be "Blipped", meaning quick crack of the throttle! That may be some of the issue!
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