Scott,
The resistor you speak of is in series with the coil when the ignition
switch is in the RUN position.
When the ignition switch is in the START position, the batter voltage is
applied directly to the + side of the coil, bypassing the resistor to
generate a better spark with the high current load of the starter.
You should have at least 12 volts on the input side of the resistor, and a
few volts less at the + terminal of the coil. At least 8 volts or so I
would think. If you have 12 or so volts going into the resistor, and
essentially nothing on th + coil terminal, the resistor is probably bad, or
there is a defective wiring connection somewhere between the resistor and
coil.
You can download a 69 roadster schematic from the TECH STUFF page on my web
site. It is a scan of the 69 owners manual that has been cleaned up and
color coded for unfused, unswitched fused, and ground circuits. It is a 2
Meg plus download for the PDF file, but very useful when you need it.
Especially for a 69 model car.
Tom
69 2000
Portland
www.fransfancies.com/datsun
-----Original Message-----
From: owner-datsun-roadsters@autox.team.net
[mailto:owner-datsun-roadsters@autox.team.net]On Behalf Of Scott Haynes
Sent: Monday, July 07, 2003 6:16 PM
To: datsun-roadsters@autox.team.net
Subject: No Spark!
In trying to get my engine running, I set things up as advised earlier. The
crank is at 15deg, points are set to just open but still nothing. I checked
the points with the hey on as Gordon suggested and found I had no spark
across the gap when moving the points open and closed.
I cleaned the points with alchohol but still no luck. I found that if I
jumper a wire from the positive battery terminal to the positive side of the
coil, I get a great spark. With the key on, I am only showing about 24
millivolts at the positive terminal. After looking at the schematics I see
that there is a resistor tied in either series or parallel depending on
which print you look at. No reference to the size or reason for the
resistor.
Can anybody take a multimeter out to their car and check to see what kind of
voltage you are getting at the "+" side of your coil (on a 2000) with the
key on.
I'm pretty bummed to have come this far with this engine change only to get
stumped by a stray electron.
Thx,
-Scott Haynes
69 2k work in progress
69 2k next project
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