• Hi Guest!
    If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

Fuel Pump

Share this page

VelodromeRacer

VelodromeRacer

Jedi Trainee
Offline
Another new one for the forum to ponder...

So I have my rebuilt engine installed. I placed an inline glass fuel filter as well. After driving for 2 days, it will not start. I notice that the fuel pump is not "tapping" and the fuel filter shows no visible fuel. I changed to a spare fuel pump, and still no tapping or start. I am not an electrician, so I need help and suggestions on where I should check. Looking at the wiring diagram, it looks like a single white wire runs from the pump to the fuse block. How do I check to see if power is getting through the wire to the pump? (Keep in mind I need a simple gage or method).
 
HI Racer, Simple guage: take a 12 volt bulb solder a wire on its tip and one on the base. Go to the fuse box with the ignition on and connect the bulb to the white wire and ground it should light.Next move to the pump and make the same test between the white wire and ground it should light again. Note these light testers are available at most auto stores for very little money.Should the first test check ok but the second fail make a long jumper to go from the fuse block to the pump and see if the pump starts up.Note, since this might take a bit of time disconnect the white wire at the coil to prevent its overheating. Let us know how you get on---Keoke
 
Keoke, I doubled with you, at least the information does not conflict too much.

The most simple gage would be a spare 12V tail light bulb. You may wish to put the bulb in a socket & add a couple of wires to make your very own test light. In this case, the light is actually better than a volt meter because it puts a load on the circuit. Any place that the lamp is bright means that the circuit is good to that point.

Connect the the light between the white wire on the pump & a clean spot on the frame, turn the switch on, the bulb should glow brightly. If it doesn't light or is dim, do the same at the fuse block where the white wire connects. If the bulb is still not bright, tighten the fuse block connection.

If still nothing, check the white wire at the back of the ignition switch.

Next would be the BRN/BLU wire on the ignition switch.

Next, the A1 terminal of the voltage regulator.

Next the A terminal of the VR.

Next the solenoid terminal that the battery connection is on.
D
 
Thanks gang, I shall work on it tomorrow and report back to you all. (I knew the forum would have a rational approach)!
 
Back
Top