[Roadsters] No spark... no run... :(

The Ken Pearce ken__pearce at hotmail.com
Thu Aug 25 18:23:44 MDT 2011


OK, I'm getting conflicting information about the wire (16 ga or so) on the
outside of the distributor, front side (towards radiator) that had a spade
connector.  Does this go to the POS or NEG spade terminal on the ignition
coil?

Thanks for all the help...

Ken
Bellingham, WA
68-2000

> From: roadsters311 at rogers.com
> To: ken__pearce at hotmail.com
> Subject: Re: [Roadsters] No spark...  no run...    :(
> Date: Thu, 25 Aug 2011 16:54:47 -0400
>
> Check the carbon point at the top of the inside of the cap..it has
> to touch the rotor...
> you should get a spark when the points open and close..
> if points are blue...change the condenser..
> Al
>
> ----- Original Message -----
> From: "The Ken Pearce" <ken__pearce at hotmail.com>
> To: <datsun-roadsters at autox.team.net>
> Sent: Thursday, August 25, 2011 2:50 PM
> Subject: Re: [Roadsters] No spark... no run... :(
>
>
> > Fouind this on Datsun.org     I'll troubleshoot at lunch... might be my
> > points...
> >
> > Ken
> >
> > Ignition
> >
> >
> >
> >
> >
> > Pull off the coil wire from the distributor, and hold it about 1/4" from
> > a grounded piece of metal. Double check the hand brake is set,
> > transmission in neutral, and have a friend crank the engine over. You
> > should see a nice fat blue spark jump from the coil wire to ground.
> >
> >
> >
> >
> >
> > To make sure the cap and rotor are OK, if the coil wire test passed,
> > pull the wire off a spark plug, insert a paper clip into the spark plug
> > boot, and repeat the test (plug).
> >
> >
> >
> >
> >
> > IF OK, go to FUEL Test:
> >
> >
> >
> >
> >
> > If no spark is present, then remove the distributor cap and check the
> > ignition
> > points and wiring.
> >
> >
> >
> >
> >
> > A simple "light bulb tester" can confirm there is power at the ignition
> > coil,
> > and that the points are functional.
> >
> >
> >
> >
> >
> > Clip the light bulb tester across the ignition coils "+" and ground.
> > With the ignition on, the bulb should light. (If not, the ignition
> > switch, or wiring has a problem... you can "hot wire" the car by placing
> > a jumper wire from the battery "+" terminal and "+" wire on the coil.
> >
> >
> >
> >
> >
> > Now clip it across the  "+ and "-" terminals: When the points close, the
> > light should come on, when the point are opened the light goes off.
> > [Check the points, make sure they open and close, and the wiring is
> > connected.]
> >
> >
> >
> >
> >
> > It that checks out, the coil is probably at fault.  MOST electrical
> > problems
> > are just dirty & loose connections!
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >> From: ken__pearce at hotmail.com
> >> To: datsun-roadsters at autox.team.net
> >> Date: Thu, 25 Aug 2011 11:17:41 -0700
> >> Subject: [Roadsters] No spark...  no run...    :(
> >>
> >> Ok, down to debugging an electrical problem on my 68 2000...
> >>
> >> My initial guess is that my ignition coil is toast.    Here are my
> >> observations:
> >>
> >> 1.)  No spark on wires, not on the plug wires or the center coil wire
> >> when
> > I
> >> crank it over.
> >> 2.)  When ignition key is on, I have 0 volts between + and - terminals
on
> >> coil
> >> 3.)  When ignition key is on, I have 12 v between + on ignition coil and
> >> ground (fender of car)
> >> 4.)  When ignition key is on, I have 12 v between - on ignition coil and
> >> ground (fender of car) (this one is weird)
> >>
> >> seems perhaps the coil is shorted and + and - are connected internally
> > (thus
> >> explaining #4 above)
> >>
> >> Should the coil be producing high voltage (spark) on the coil wire all
> >> the
> >> time when 12v is applied to the + and - terminals on the coil?    Does
> >> the
> >> distributor (cap, rotor, points, condenser) have any role in the
ignition
> > coil
> >> producing high voltage?  Or does it just receive that voltage on the
> >> center
> >> wire hi-tension wire?
> >>
> >> I tried running a small wire directly from the battery neg terminal to
> >> the
> >> coil neg terminal  and from the battery + to the coil +, still no
> >> spark...
> >>
> >> The coil is probably original, and could probably stand to be replaced
> >> anyway...
> >>
> >> Anyone with trouble shooting tips or techniques, I'm all ears!
> >>
> >> Thanks,
> >>
> >> Ken
> >> Bellingham, WA
> >> 68-2000 (oh so close to running...)
> >> ________________________________________
> >>
> >> datsun-roadsters at autox.team.net
> >>
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> >
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> > m
> > ________________________________________
> >
> > datsun-roadsters at autox.team.net
> >
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m


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