[Healeys] su fuel pump

[Bob Spidell]

Ron,


The new electronic SU pumps make a tapping or knocking sound instead of 
a click.

The terminal on the body of the pump is the ground.  The terminal on the 
end of the pump is for current from the battery.  If you put the red 
lead on your voltmeter on the ground, and the black lead on the negative 
terminal you should see +12V (if you reverse them you'll see -12V on a 
digital voltmeter).   If you have the correct DVM reading and the pump 
doesn't make any noise it may be defective.  If there's no voltage there 
may be a problem with your ignition switch. I do think if these pumps 
sit on the shelf a long time the diaphragm may get stiff and the pump 
may not operate--your call whether to open the pump up or send it back 
(note there isn't anything to adjust in the electronic pumps besides the 
initial tension on the diaphragm).

If your starter works there is nothing wrong with your cutoff switch. 


bs


Ron Davies wrote:
> Hi,
> Hope someone out there with a BJ8 pos ground can help me out.
> My mechanic and Moss are gone for the weekend.
> 67 BJ8 pos ground.
> Old fuel pump stopped ticking.
> Mechanic told me to first check the cut off switch by bypassing it by
> alligator clipping across the switch terminals. Still no click. 
> Got a new pump. No instructions as to pos or negative terminals but it looks
> just like the old one. Hooked it up. No click. Won't start.
> Ran a voltmeter across the two wires that are going to the pump. It shows a
> 12v current so power is going to the pump.
> Fuses look fine and the fuse to the starter is the same for the pump and the
> starter is working.
> Do these new pumps not click?
> Any suggestions?
> I have Moss part number 377-245 pos ground fuel pump electronic, SU 
> Does electronic mean no click?
> TIA
> Ron