Author Topic: Fuel gauge issues.  (Read 1974 times)

0 Members and 1 Guest are viewing this topic.

Offline Paradox1559

  • Full Member
  • *
  • Posts: 11
  • Never strike an anvil with cold steel
Fuel gauge issues.
« on: January 23, 2018, 09:25:42 AM »
Hello, I realise I don't need a fuel guage, but I still want one.
I just can't seem to find the ohm specs for the sending unit. Does anyone know this off hand, I'm currently getting 11-80ohms.
Fahrvergnügen = the feeling of joy while driving.

Offline Paradox1559

  • Full Member
  • *
  • Posts: 11
  • Never strike an anvil with cold steel
Re: Fuel gauge issues.
« Reply #1 on: January 23, 2018, 09:44:34 AM »
I would like to add that I tried searching the forums for the answer, but the search engine isn't working.
Fahrvergnügen = the feeling of joy while driving.

Offline 05c50

  • 05c50
  • Expert
  • ****
  • Posts: 755
    • Classic Motorcycle Solution
Re: Fuel gauge issues.
« Reply #2 on: January 23, 2018, 06:10:20 PM »
The shop manual says: 6-10 ohms full and 75-80 empty. I gotta tell you though, my gauge works, but not real well. It tends to stay on full then drop quickly.

........Paul
Wear a helmet,the life you save may be your own.Ask me how I know.               CB650C,CB550F,GL1000,CB750A

Offline Paradox1559

  • Full Member
  • *
  • Posts: 11
  • Never strike an anvil with cold steel
Re: Fuel gauge issues.
« Reply #3 on: January 23, 2018, 09:01:43 PM »
Well I'm moving to the 7v regulator. However, Pretty much everything on that circuit works except the horn, the turn buzzer, and the fuel gauge. The more I dig, the more it seems like I have loose wiring.
Fahrvergnügen = the feeling of joy while driving.

Offline Paradox1559

  • Full Member
  • *
  • Posts: 11
  • Never strike an anvil with cold steel
Re: Fuel gauge issues.
« Reply #4 on: January 24, 2018, 02:46:33 AM »
I gotta tell you though, my gauge works, but not real well. It tends to stay on full then drop quickly.

........Paul

Sounds like you have corrosion in your sending unit.
Fahrvergnügen = the feeling of joy while driving.

Offline 05c50

  • 05c50
  • Expert
  • ****
  • Posts: 755
    • Classic Motorcycle Solution
Re: Fuel gauge issues.
« Reply #5 on: January 24, 2018, 05:42:20 AM »
Well I'm moving to the 7v regulator. However, Pretty much everything on that circuit works except the horn, the turn buzzer, and the fuel gauge. The more I dig, the more it seems like I have loose wiring.

THe buzzer and horn aren't associated with the 7v circuit, sounds like you have more than one problem.

..........Paul
Wear a helmet,the life you save may be your own.Ask me how I know.               CB650C,CB550F,GL1000,CB750A

Offline hondamad

  • Full Member
  • *
  • Posts: 78
Re: Fuel gauge issues.
« Reply #6 on: December 31, 2019, 02:37:58 AM »
My 76 a shows a 7volt regulator but don’t find it on the loom. Anyone have a picture for me please ?

Offline raymond10078

  • Moderator
  • Expert
  • *****
  • Posts: 775
  • Just learnin' as I go . . . .
Re: Fuel gauge issues.
« Reply #7 on: December 31, 2019, 09:30:25 AM »
Look here (under left side cover) mounted on the back side of the battery box (slightly behind/above the fuse box):
« Last Edit: December 31, 2019, 10:40:27 AM by raymond10078 »
1978 CB750A (upgrading very, very slowly)

Past bikes - Honda: SL350, CX650C, CB900C, CB1000C, CM450A; Kawasaki: several 1972 750 H2's; Suzuki: TC90J.

Bikes I want: CX650ED, a mid-sized japanese V-twin with ABS.