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FUELING ISSUE - FUEL FILTER

Started by greenohawk69, March 31, 2017, 07:41:17 AM

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greenohawk69

#15
April 04, 2017, 03:37:49 PM
Is there a way to fix the cap? Askig as I did remove it and paint it after taking most of the bike apart.
"An enlightened people, and an energetic public opinion... will control and enchain the aristocratic spirit of the government." --Thomas Jefferson to Chevalier de Ouis, 1814

There are 4 boxes to be used in the defense of liberty:  Soap, Ballot, Jury and Ammo.  Please use in this order.  -- Ed Howdershelt

ducpainter

#16
April 04, 2017, 03:54:12 PM
Quote from: greenohawk69 on April 04, 2017, 03:37:49 PM
Is there a way to fix the cap? Askig as I did remove it and paint it after taking most of the bike apart.
On the underside of the cap, where the rubber piece meets it, there is a hole. It's possible you got some paint in there, or the rubber flapper things have just stuck. I wouldn't try to disassemble it. There's about 11ty billion little pieces that can go flying. I have experience with that part. I'd try spraying a little silicone spray, or maybe wd-40 and blowing some compressed air in that hole, and the one that is visible on the part that's inside the tank when the cap's closed. Maybe you can get it freed up.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


greenohawk69

#17
April 04, 2017, 04:14:04 PM
Ok, thanks.
"An enlightened people, and an energetic public opinion... will control and enchain the aristocratic spirit of the government." --Thomas Jefferson to Chevalier de Ouis, 1814

There are 4 boxes to be used in the defense of liberty:  Soap, Ballot, Jury and Ammo.  Please use in this order.  -- Ed Howdershelt

koko64

#18
April 04, 2017, 04:59:16 PM
+1. This is a good thing to do periodically to stop crud building up. Its good to have a compressor in the shed. You can check to see if air is flowing freely from the end of the breather and overflow hoses.
2015 Scrambler 800

greenohawk69

#19
April 04, 2017, 05:03:26 PM
It seemed to be ok when I originally removed it and ran over flowing water through it twice. Not sure if the painter ran compressed air through when they finished. I did put gas in it, then drained it and ran water through it again. Gas drained fine as did water. I've replaced the fuel filter twice (saw some sediment I did not like) and have a third one ready.
"An enlightened people, and an energetic public opinion... will control and enchain the aristocratic spirit of the government." --Thomas Jefferson to Chevalier de Ouis, 1814

There are 4 boxes to be used in the defense of liberty:  Soap, Ballot, Jury and Ammo.  Please use in this order.  -- Ed Howdershelt

ducpainter

#20
April 04, 2017, 05:17:39 PM
Quote from: koko64 on April 04, 2017, 04:59:16 PM
+1. This is a good thing to do periodically to stop crud building up. Its good to have a compressor in the shed. You can check to see if air is flowing freely from the end of the breather and overflow hoses.
I think he might have a stuck rubber flapper valves in the cap T.

Either that, or he has a restriction in the tank outlet from the sediment he keeps mentioning.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


greenohawk69

Re:
#21
April 04, 2017, 05:22:14 PM
Thanks. I will see how I clean these areas.

Any suggestions on how to clean these areas - I don't have an air compressor in my garage.
"An enlightened people, and an energetic public opinion... will control and enchain the aristocratic spirit of the government." --Thomas Jefferson to Chevalier de Ouis, 1814

There are 4 boxes to be used in the defense of liberty:  Soap, Ballot, Jury and Ammo.  Please use in this order.  -- Ed Howdershelt

koko64

#22
April 04, 2017, 05:34:17 PM
Gotcha DP. Open cap running will tell.

You need compressed air really.
If a simple vent issue isnt found then you need to test some other stuff.
Be interesting to see if fuel flows well to the carbs when bypassing the pump. You need a full tank to test that. Pump failure is not common but E fuels may attack the pumps membranes.
Good to check the manifold to pump vacuum hose first. If its ruptured then the pump won't pulse (known to happen).
Maybe the little carb mesh filter in the T piece is gummed up (possible) or the carbs have gummed up float needles (unlikely).
2015 Scrambler 800

ducpainter

Re:
#23
April 04, 2017, 05:57:01 PM
Quote from: greenohawk69 on April 04, 2017, 05:22:14 PM
Thanks. I will see how I clean these areas.

Any suggestions on how to clean these areas - I don't have an air compressor in my garage.
Spray them down with some wd-40, let them sit, and head down to a local auto, moto, or bicycle shop and ask them if they can blow some compressed air though the holes, in each direction. 30-40 psi should do it.

Running with the cap open will tell a lot. You should really do this first.

If the problem is gone, the issue is in the cap. If not, you have a problem in the other direction...the feed side.

You can chase maybes, or you can chart a course and eliminate items one by one.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


greenohawk69

#24
April 04, 2017, 06:02:01 PM
Thank you.
"An enlightened people, and an energetic public opinion... will control and enchain the aristocratic spirit of the government." --Thomas Jefferson to Chevalier de Ouis, 1814

There are 4 boxes to be used in the defense of liberty:  Soap, Ballot, Jury and Ammo.  Please use in this order.  -- Ed Howdershelt

koko64

#25
April 07, 2017, 03:23:23 PM
Let us know how you go.
2015 Scrambler 800

greenohawk69

#26
April 09, 2017, 08:03:45 PM
Drained the tank 2x and blew compressed air through it 2x. When the tank is off the bike, the gas flows easily through the fuel filter when I open the shut-off.

When I put the tank back on and the fuel line is connected to the line flowing to the fuel pump, the gas does not flow through the fuel filter. Nothing changes with the fuel cap open or closed.

Sent from my SM-G860P using Tapatalk

"An enlightened people, and an energetic public opinion... will control and enchain the aristocratic spirit of the government." --Thomas Jefferson to Chevalier de Ouis, 1814

There are 4 boxes to be used in the defense of liberty:  Soap, Ballot, Jury and Ammo.  Please use in this order.  -- Ed Howdershelt

ducpainter

#27
April 10, 2017, 03:16:33 AM
You'll need to give the fuel a place to go to see if it flows, if that makes sense.

With the pump in the system the diaphragm stops the flow until it draws it from the tank. Can you disconnect the line after the petcock?
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


greenohawk69

#28
April 10, 2017, 05:27:26 AM
Koko above mentioned bypassing the pump directly to the carb to see if the gas flows.



Sent from my SM-G860P using Tapatalk

"An enlightened people, and an energetic public opinion... will control and enchain the aristocratic spirit of the government." --Thomas Jefferson to Chevalier de Ouis, 1814

There are 4 boxes to be used in the defense of liberty:  Soap, Ballot, Jury and Ammo.  Please use in this order.  -- Ed Howdershelt

greenohawk69

#29
April 10, 2017, 05:34:03 AM


Quote from: ducpainter on April 10, 2017, 03:16:33 AM
You'll need to give the fuel a place to go to see if it flows, if that makes sense.

With the pump in the system the diaphragm stops the flow until it draws it from the tank. Can you disconnect the line after the petcock?

I removed the vacuum petcock.

Gas flows from tank through quick disconnect - fuel filter - shut-off valve without any problems.

Gas doesn't flow when the shut-off valve is connected to the fuel line - fuel pump.

Vacuum line from fuel pump to manifold appeared to be ok after inspection. What is the diameter of this line? Probably just replace it as it is old.

"An enlightened people, and an energetic public opinion... will control and enchain the aristocratic spirit of the government." --Thomas Jefferson to Chevalier de Ouis, 1814

There are 4 boxes to be used in the defense of liberty:  Soap, Ballot, Jury and Ammo.  Please use in this order.  -- Ed Howdershelt
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