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  #1 (permalink)  
Old 05-02-2019, 04:35 AM
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Fuel pump for 2001 Road King EFI

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My Road King is getting starved of fuel at 3/4 to full throttle. It seems to "surge" as well. I think it's the fuel pump, but wanted to see if there is something else to check along with changing pump.
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Old 05-19-2019, 10:15 AM
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Check the lines in the tank for pin holes it was a common issue
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Old 05-25-2019, 02:41 PM
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I changed the fuel pump and in-tank filter. It seemed to have fixed the problem until the thing got up to operating temperature. I'm not sure what to do next. The only way to describe the "surge" in power, is similar to when there's a clog in the next jet up on a carbureted machine, such as moving from idle circuit to the main jet. It's still a stock 88" with stock exhaust, air filter, and injectors. I'm not looking to hit 140 like my 127, but I just want to be able to get to 80mph when I need to!
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Old 05-25-2019, 05:30 PM
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That sounds like it is saying..injector..How hard is it to get to the injectors? ..you could test them for spray..compare one to the other, they have moo koo you tube videos on that..I would run some Lucas through the tank first, maybe it would clean them..My 127 will not run (same symptoms) but with carb....unless I use it every 5 or 6 tanks of gas..
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Last edited by Shovel52; 05-25-2019 at 05:39 PM..
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Old 05-26-2019, 06:00 AM
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not a bad idea. The only thing that I can say about injectors is that if they are corroded or clogged, they will have symptoms throughout the power band and rpm range. This bike runs fine up until the higher RPMs. No way to tell exactly how high the RPM;s they are, because Harley didn't put one on this model.

On a side note, I've never had to put carb or injector cleaner in my G carb powered 127. I do keep an inline filter and run only high octane, corn free gas in it though.
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Old 05-26-2019, 07:32 PM
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It seems like if an injector was partially clogged, then it would deliver enough fuel to run at low rpm, but when you throttle up, then not enough fuel. I have never owned a bike with injectors
but cars yes, and I have never had to put the injector cleaner in one, but it sure clears up my 127, and I have to use it often..It's the ethenol, and here in Louisiana they must use a lot of it.....I can pour gasoline into a bowl, and sit it in the sun, and when it evaporates, you can wipe gum out of the bowl with your finger.
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Last edited by Shovel52; 05-26-2019 at 07:37 PM..
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Old 05-27-2019, 03:14 AM
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I don't run ethanol in any of my bikes, small engines, etc for that exact reason
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