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Harley Riders USA Forums » Harley Davidson Motorcycle Models » Touring » Vacuum line


Touring Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic



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Old 10-07-2019, 04:04 PM Top   #1 (permalink)
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Default Vacuum line

Hey guys new here but very curious as I've been working on my bike and as I took my carb off I noticed the vacuum line on the top back side had been plugged off with a screw. What's the line for, where does it hook back up to and would it be better off if I left it alone? By the way I'm doing my own thing with a 2000 police Edition Road King that I bought with a little over 50,000 miles on it and was told that it has been punched out or resleeved to a 1550 instead of the original 1450. I'm clueless as to where this vacuum line goes or its purpose.
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Old 10-07-2019, 11:00 PM Top   #2 (permalink)
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I'm pretty sure it's only a thin line ? on some models the little line runs up under the tank and equalises the tank pressure. If you don't have the same size metal hose going in under your tank , then you should be all good Cop bikes usually come with some good upgrades from factory , like cam's and upgraded clutch.
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Old 10-08-2019, 06:15 AM Top   #3 (permalink)
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I'm pretty sure it's only a thin line ? on some models the little line runs up under the tank and equalises the tank pressure. If you don't have the same size metal hose going in under your tank , then you should be all good Cop bikes usually come with some good upgrades from factory , like cam's and upgraded clutch.
Thanks Brother as I had no idea where it went and I had been unplugging it every time I had to take the carb off until yesterday when I seen the screw in the other end.
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Old 10-08-2019, 06:19 AM Top   #4 (permalink)
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Thanks Brother as I had no idea where it went and I had been unplugging it every time I had to take the carb off until yesterday when I seen the screw in the other end.
Speaking of upgrades it has the normal horn and siren buttons but it also has a button on the right handed switch which says pursuit. What does that button do? Any chance of it adding any horses to the engine or anything?
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Old 10-08-2019, 03:35 PM Top   #5 (permalink)
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Who knows mate give it a go and see if it makes a difference
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