And don't forget that the vacuum advance will move the plate that the points
and wire are on,
which will cause flexing in the wire.
Gary McCormick wrote:
> I was reading Andrew's most recent message when I remembered the electrical
>trouble I had
> with a '73 or '74 510 I had in college. Same symptoms: no spark and
>everything seeming to
> check out alright. I was just about to reply that it had turned out to be
>this little wire
> connecting the points to the distributor, when I read Jerry's message.
>
> On my 510 the wire looked perfect from the outside (it had cloth - probably
>fiberglas
> cloth - insulation) but was fractured internally - my theory was that it
>stuck up in the
> way of the rotor and got whipped every time the rotor went around, which
>meant that it
> took a lot of abuse before it finally let go. When you replace it, make sure
>that it is
> tucked down out of the way of the rotor - and Happy Motoring!
>
> Gary McCormick
> San Jose, CA
> ---------------------------------
>
> jdg1 wrote:
>
> > Andrew,
> >
> > On the older Datsuns, including the roadster, there was a special wire that
> > ran from the side of the distributor to the points. This wire (orginally
> > white) would sometimes break internally even though the outer sheath would
> > remain intact. Pulling on the ends of the wire will not give a true picture
> > if it is broken since you may be pulling on the sheath. Testing the wire
> > with an Ohm meter may also be inaccurate as the wire may make contact in
> > certain positions -- usually the same position as you are holding it to
> > test. You may want to check this wire and replace it if possible.
> >
> > good luck,
> >
> > jerry
> > -----Original Message-----
> > From: Andrew Jacobs <Legal-Z@worldnet.att.net>
> > To: datsun-roadsters@autox.team.net <datsun-roadsters@autox.team.net>
> > Date: Monday, June 14, 1999 6:31 PM
> > Subject: still no spark
> >
> > >first i want to thank ron for his input so far, as well as giving me his
> > >phone number. i appreciate the hospitality of this list. now, on to the
> > >problem at hand. i have changed the coil and the ballast resistor, the
> > >points and the condensor. still nothing. i know my battery is ok because
> > it
> > >is still turning the engine over after maybe 20+ tries without any charging
> > >inbetween. where else can i look?? i thought maybe the ignition switch,
> > but
> > >when i turn it to the on position, all of the accessories work no problem.
> > >do i just need cut open every wire cluster and examine every wire? i hope
> > >not, but that is where i'm going next unless someone has another
> > suggestion.
> > >i appreciate the help so far.
> > >thanks,
> > >andy
> > >p.s. ron i didn't call you at home because it is getting late here, but i
> > >appreciate the offer.
> > >
> > >
--
Gordon Glasgow
Renton, WA
http://www.gordon-glasgow.org
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