Author Topic: Fuel flow blockage - Clean tank, new fuel pump and cleaned injectors  (Read 4699 times)

Offline ed3541

  • Motobrick Curious
  • Posts: 37
I have a '95 K75 that has a fuel blockage. I cleaned the tank, changed the fuel pump (it works) and sonic-cleaned the injectors. Fuel line from pump to Fuel rail is clear. Fuel pump pumps a strong stream but no fuel is getting to rail. Could pressure regulator be stuck? Anyone have this problem? - I could use some help.
Love this bike and need it fixed cause it's the coolest running bike for South Florida. Right now - riding a Triumph Speed Triple but it'll be too hot for the summer.

thanx,
Ed
  • Boca Raton, Florida
  • '92 K75s '95 K75 '85 FYK100

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 11299
Re: Fuel flow blockage - Clean tank, new fuel pump and cleaned injectors
« Reply #1 on: February 03, 2017, 12:04:06 PM »
Fuel line from pump to Fuel rail is clear.
Does that mean it doesn't have a blockage in it or that it doesn't have any fuel in it?
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline billday

  • ^ Quintessential Motobricker
  • Posts: 1341
Re: Fuel flow blockage - Clean tank, new fuel pump and cleaned injectors
« Reply #2 on: February 03, 2017, 12:09:54 PM »
You don't mention the fuel filter. Have you replaced it? Is it oriented correctly?
  • New York State, USA 10977
  • 1985 K100

Offline The Mighty Gryphon

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 6843
Re: Fuel flow blockage - Clean tank, new fuel pump and cleaned injectors
« Reply #3 on: February 03, 2017, 01:56:16 PM »
Is there fuel coming out of the hose that feeds the rail?  Do you have the fuel lines connected to the correct spigots on the tank? 

+1 on the filter.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

Offline ed3541

  • Motobrick Curious
  • Posts: 37
Re: Fuel flow blockage - Clean tank, new fuel pump and cleaned injectors
« Reply #4 on: February 04, 2017, 08:14:39 AM »
Thanx for the help. I got it running. I removed the return line at the tank, pressed the starter button and got a strong stream of fuel. The engine ran and kept running when I reconnected the fuel line. So I think it was some kind of air-lock in the return line. Bike is purring again and running better than before because of new fuel pump and clean injectors.
  • Boca Raton, Florida
  • '92 K75s '95 K75 '85 FYK100

Offline Laitch

  • Faster than a speeding pullet
  • Administrator
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Re: Fuel flow blockage - Clean tank, new fuel pump and cleaned injectors
« Reply #5 on: February 04, 2017, 08:20:26 AM »
Thanks for the update, ed!
  • Along the Ridley in Vermont.
  • 1995 K75 89,000 miles

Offline The Mighty Gryphon

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 6843
Re: Fuel flow blockage - Clean tank, new fuel pump and cleaned injectors
« Reply #6 on: February 04, 2017, 10:32:37 AM »
Thanks for the update, ed!

+1.  Have you posted an photos of your brick?  Looks like a nice one from your avatar.  We always like a little K-bike porn around here.
  • In my garage in Marilla, NY
  • '91K100RS White/Blue
Current:
'91 K100RS16V "Moby Brick Too"

Past:
'94 K75RT "Ilsa, She Wolf of the SS"
'92 K100RS16V "Moby Brick" (RIP, deceased in a vehicular assault)
'94 K75S Special Edition Dakar Yellow "Cheetos"
'89 K100RS Special Edition "Special Ed"

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