Fuel Pump Not Powering Up

Laitch · 51 Re: Fuel Pump Not Powering Up Sat May 26, 2018 12:06 am

Laitch

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Number of posts : 2065

@GregC wrote:Even though an old thread I found it really informative and useful for chasing a fault on my K100.

Why don't you share the tale of your chase here, Greg, and tell us where it led you? It might inspire somebody to avoid setting a match to a stubborn K for insurance purposes.

GregC · 52 Helped stop chasing a red herring Sat May 26, 2018 1:47 am

GregC

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Number of posts : 8

I recently found some corrosion in tank, so removed it for repair. While tank was off i decided to fit a VDO fuel gauge . I wired the the gauge into the part of the harness that goes to the fuel sender: Green 12v, Brown ground, yellow sender, white low fuel light. Anyway with ignition on the gauge would not operate and there was no longer 12v on green!

So the value in this thread was the knowledge that the fuel pump does not have power all the time ignition is on , hence lack of 12v on green was not actually a fault!

Inge K. · 53 Re: Fuel Pump Not Powering Up Sat May 26, 2018 4:12 am

Inge K.

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@GregC wrote:While tank was off i decided to fit a VDO fuel gauge . I wired the the gauge into the part of the harness that goes to the fuel sender:

Bit late but...under the tank you find a own connector for the fuel gauge.

Fuel Pump Not Powering Up - Page 2 Kontak12

Matthew-Brisbane · 54 Re: Fuel Pump Not Powering Up Sat May 26, 2018 9:29 pm

Matthew-Brisbane

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Number of posts : 612

@Inge K. wrote:

@GregC wrote:While tank was off i decided to fit a VDO fuel gauge . I wired the the gauge into the part of the harness that goes to the fuel sender:

Bit late but...under the tank you find a own connector for the fuel gauge.

Is that connector on all wirring looms ?
I would like a better gauge on mine than just the lights on the dash
Plus a water temp gauge

Inge K. · 55 Re: Fuel Pump Not Powering Up Sun May 27, 2018 4:58 am

Inge K.

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@Matthew-Brisbane wrote: Is that connector on all wirring looms ?
I would like a better gauge on mine than just the lights on the dash
Plus a water temp gauge

All is present exept for the wire to the water temp sensor.
If have the OEM gauges in mind, it's also a intermediate wiring needed.

If you have a -83 -85 model the connector looks a bit different, and it
haven't any connector for the fuel level gauge as a different sensor is used.

GregC · 56 not too late Thu May 31, 2018 8:53 am

GregC

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Number of posts : 8

@Matthew-Brisbane wrote:Have now used that connector, thanks for ID'ing it.

@Inge K. wrote:

@GregC wrote:While tank was off i decided to fit a VDO fuel gauge . I wired the the gauge into the part of the harness that goes to the fuel sender:

Bit late but...under the tank you find a own connector for the fuel gauge.

Is that connector on all wirring looms ?
I would like a better gauge on mine than just the lights on the dash
Plus a water temp gauge

ReneZ · 57 Re: Fuel Pump Not Powering Up Sat Jun 02, 2018 4:10 pm

ReneZ

Life time member

Number of posts : 1307

Hi Greg, depends on the age of the bike and its equipment. The early bikes had a standpipe with two sensors, which doesn't allow fitting a fuel gauge. Younger models with a float in the tank should allow that. Put your bike details in your signature and we can respond better :-).

Cheers, Rene

MartinW · 58 Re: Fuel Pump Not Powering Up Sat Jun 02, 2018 5:01 pm

MartinW

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Number of posts : 2203

Bite your tongue Laitch, have you been associating with the Dark Side ( HOG). No Brickian should ever suggest doing an insurance job on a poor unsuspecting Brick. Shame shame shame. Now go forth and repent your sins and consider resurrecting a poor neglected one. Fuel Pump Not Powering Up - Page 2 161205

Fuel Pump Not Powering Up - Page 2 161205

Fuel Pump Not Powering Up - Page 2 167893

Regards a shocked Martin.

Laitch · 59 Re: Fuel Pump Not Powering Up Sat Jun 02, 2018 6:20 pm

Laitch

Life time member

Number of posts : 2065

@MartinW wrote: Now go forth and repent your sins and consider resurrecting a poor neglected one.

Fuel Pump Not Powering Up - Page 2 Il_57010

Been there; done that; got the T-shirt and when it turned out to be a V-neck, I backslid immediately and it was repossessed.

MartinW · 60 Re: Fuel Pump Not Powering Up Sat Jun 02, 2018 6:38 pm

MartinW

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Number of posts : 2203

I'm with you on the "V" necked "T" shirts. Fuel Pump Not Powering Up - Page 2 797640

I'll leave the wearing of those to my better half.
Regards Martin.

MarcS · 61 Re: Fuel Pump Not Powering Up Thu Jun 14, 2018 4:29 am

MarcS

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Number of posts : 192

I wonder if the OP ever got his bike to run?????

rayban1 · 62 84 k100 fuel pump Sun Oct 28, 2018 3:09 pm

rayban1

active member

Number of posts : 5

Hello all..this seemed like a good place to ask about no start problem
Starter works but I dont think the pump is working. I have 10.9 v at wht/grn and brn wires on the pump plug when I push starter, but I dont hear the pump turning. Does that mean the pump is bad or could it be another problem ?

Point-Seven-five · 63 Re: Fuel Pump Not Powering Up Sun Oct 28, 2018 5:42 pm

Point-Seven-five

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Number of posts : 2993

The 4 pin connector from the tank to the harness is a frequent culprit in pump running problems.

indian036 · 64 Re: Fuel Pump Not Powering Up Sun Oct 28, 2018 6:33 pm

indian036

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Number of posts : 1409

@rayban1 wrote:Hello all..this seemed like a good place to ask about no start problem
Starter works but I dont think the pump is working. I have 10.9 v at wht/grn and brn wires on the pump plug when I push starter, but I dont hear the pump turning. Does that mean the pump is bad or could it be another problem ?

Can I suggest that a new thread is a better place to start? Tagging on to an old thread, even with a similar problem, can result in losing track. Smile

As point seven five said, ensuring good continuity at the 4 pin connector is a good first step.

Bill

rayban1 · 65 Re: Fuel Pump Not Powering Up Mon Oct 29, 2018 1:12 pm

rayban1

active member

Number of posts : 5

Ok Indian ... thanks..... Ill try that !

51 Re: Fuel Pump Not Powering Up Sat May 26, 2018 12:06 am

Laitch

52 Helped stop chasing a red herring Sat May 26, 2018 1:47 am

GregC

53 Re: Fuel Pump Not Powering Up Sat May 26, 2018 4:12 am

Inge K.

54 Re: Fuel Pump Not Powering Up Sat May 26, 2018 9:29 pm

Matthew-Brisbane

55 Re: Fuel Pump Not Powering Up Sun May 27, 2018 4:58 am

Inge K.

56 not too late Thu May 31, 2018 8:53 am

GregC

57 Re: Fuel Pump Not Powering Up Sat Jun 02, 2018 4:10 pm

ReneZ

58 Re: Fuel Pump Not Powering Up Sat Jun 02, 2018 5:01 pm

MartinW

59 Re: Fuel Pump Not Powering Up Sat Jun 02, 2018 6:20 pm

Laitch

60 Re: Fuel Pump Not Powering Up Sat Jun 02, 2018 6:38 pm

MartinW

61 Re: Fuel Pump Not Powering Up Thu Jun 14, 2018 4:29 am

MarcS

62 84 k100 fuel pump Sun Oct 28, 2018 3:09 pm

rayban1

63 Re: Fuel Pump Not Powering Up Sun Oct 28, 2018 5:42 pm

Point-Seven-five

64 Re: Fuel Pump Not Powering Up Sun Oct 28, 2018 6:33 pm

indian036

65 Re: Fuel Pump Not Powering Up Mon Oct 29, 2018 1:12 pm

rayban1