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switch back fuel issue

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Old Apr 19, 2021 | 03:37 PM
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Cool switch back fuel issue

motor will start and within seconds it starts missing and back firing. pulled plugs and they were dry fuel line disconnect was leaking and oring was gone. I had road 75 mi and when I started to park it started missing and died, it never ran better that day until it didn't. maybe get some help from you gentlemen
 
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Old Apr 19, 2021 | 03:40 PM
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Maybe it ran out of gas?


Just in case you have not done both of these two important items!

Be sure to add an Avatar of your favorite shot in the USER set up for the small picture you will see in the top left corner of your post.

And most importantly a Signature Line in your USER set up for your bike model, year, and all the letters that Harley recognizes it with.
(See mine below my bike picture.)

This enables others to know your exact model if you ever ask a question or another member interested in it may ask you a question about it..............
 
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Old Apr 20, 2021 | 11:47 AM
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Does it still happen after you put in a new oring?
 
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Old Apr 20, 2021 | 11:56 AM
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yes Sir, no change
 
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Old Apr 20, 2021 | 01:31 PM
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Check the fuel system- the filter, and the lines in the tank since they can get pinholes and cause a drop in fuel pressure. Test the fuel pressure. Clean your IAC. Look in the tank for loose crud. Check for codes. Clean and check the fuses and relays.
 
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Old Apr 22, 2021 | 12:08 PM
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Originally Posted by sicky
motor will start and within seconds it starts missing and back firing. pulled plugs and they were dry fuel line disconnect was leaking and oring was gone. I had road 75 mi and when I started to park it started missing and died, it never ran better that day until it didn't. maybe get some help from you gentlemen
I'd start with replacing the check valve line, the fuel filter and the pick-up sock- might want to go ahead and either get a fuel pump rebuild kit or go the Gates submersible line thing. Bit over $100 for new parts- Dennis Kirk has the stuff. Easy Peasy repair. You know if the orings in the check valve are rotten likely stuff in the tank is shot.


New check valve line

The pump assembly- rotate towards the front of the bike and gently lift it out

Uh huh...

Dont follow steps in the manual...frustrating; pull up tab on the left, slide assembly forward a bit and gently lift then you can get both fingers on checkvalve line quick release
 
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Old Apr 22, 2021 | 08:29 PM
  #7  
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Check the hole in your gas cap, try to run the bike with the cap removed, do this in a parked condition. If the vent is plugged it's creating a vacuum in the tank not letting fuel flow through the fuel pump system.
 
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Old Apr 28, 2021 | 01:11 PM
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Originally Posted by Gunter77
I'd start with replacing the check valve line, the fuel filter and the pick-up sock- might want to go ahead and either get a fuel pump rebuild kit or go the Gates submersible line thing. Bit over $100 for new parts- Dennis Kirk has the stuff. Easy Peasy repair. You know if the orings in the check valve are rotten likely stuff in the tank is shot.


New check valve line

The pump assembly- rotate towards the front of the bike and gently lift it out

Uh huh...

Dont follow steps in the manual...frustrating; pull up tab on the left, slide assembly forward a bit and gently lift then you can get both fingers on checkvalve line quick release
thank you sir. Great pictures and it was the in tank fuel line from fuel pump to disconnect valve. It had a big crack inthe line and it crumbled when taken out thank you. Semper Fi
 
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Old Apr 28, 2021 | 01:16 PM
  #9  
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Originally Posted by RIPSAW
Maybe it ran out of gas?


Just in case you have not done both of these two important items!

Be sure to add an Avatar of your favorite shot in the USER set up for the small picture you will see in the top left corner of your post.

And most importantly a Signature Line in your USER set up for your bike model, year, and all the letters that Harley recognizes it with.
(See mine below my bike picture.)

This enables others to know your exact model if you ever ask a question or another member interested in it may ask you a question about it..............
thank you RIPSAW
 
Reply
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