[Healeys] fuel pump points

[Bob Spidell]

re: " One pump has a diode (little white pancake thing)" 

Most diodes are cylindrical or spherical (the OEM diodes are large black 'barrels' with two flexible leads). That sounds more like a capacitor; depending on the type it might have been fried when you reversed the car's polarity. 

I fought this issue for years; tried all manner of diodes and capacitors. My experience is: 

- (by extrapolation) no diode or capacitor: pump will work for 2-3K miles at best before causing problems 
- (by experience) capacitor only: pump will work 3-5K miles 
- (by experience) diode: pump will work for 5-8K miles 
- (by experience) 'transistorized' (power transistor switched by original points): pump will work for 8-12K miles 

I finally bit the bullet and put an SU solid state (Hall Effect) pump in; has worked for over 20K miles. 

Bob 

-------------------------------- 
Bob Spidell - San Jose, CA 

----- Original Message -----


Likely the diode is kaput.. and surely with none on the other the arcing 
will be excessive.. frogeye at porterscustom.com 

Porter Customs 2909 Arno NE 
ld 
(Moss) and the other was my professionally rebuilt original. Yesterday, it 
happened again and I file and polished the points and all is fine. I just 
don't feel confident. I do like the original-ness of my BJ8 (phase1) and 
have 
always tried to use original stuff on replacement. It was converted to neg 
ground 10 years ago. One pump has a diode (little white pancake thing) the 
other is the original pump with out it. 
Thanks 
Rich Kahn