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@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
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