RE: [DML] Re: Electrical gremlins... no power to coil

[Travis Goodwin <tgoodwin@xxxx>]

I've tried several versions of that. 1) Pulled a spark plug and rested it
against the block and looked for a spark. 2) Unplugged the coil wire and
rested the copper tip on top of the coil and looked for a spark. 3) Ran a
jumper wire from the coil to just above the block and looked for a spark.

All 3 netted the same results.

By the by. Much like your neon tube test, you could hook a timing light up
to the coil wire as well. This I did not try. 3 out of 4 failed tests were
enough for me.

> -----Original Message-----
> From: therealdmcvegas [mailto:DMCVegas@xxxx]
> Sent: Wednesday, August 27, 2003 11:14 AM
> To: dmcnews@xxxxxxxxxxxxxxx
> Subject: [DML] Re: Electrical gremlins... no power to coil
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, Travis Goodwin <tgoodwin@xxxx> wrote:
> > I traced my non-start problem back to the coil. I pulled the coil
> wire and
> > looked for a spark to jump the gap. Nothing.
> <SNIP>
> 
> Be careful! The potential for shock is dangerous as all hell! You can
> easily get killed, or maimed! If not by the shock itself, it can be
> anything dangerous that you'll hit when you jump back!
> 
> If you need to check for spark, pull a sparkplug wire off, and
> connect it to a another sparkplug, and lay it on the intake manifold.
> That'll create a ground, and you can SAFELY view the spark jumping
> the gap. Otherwise, I found a tool @ Pep Boys that allows you to view
> spark on the coil wire by touching the sheilding with it. It looks
> like an ink pen, and contains a small tube with neon gas that
> illuminates when voltage goes thru the wire.
> 
> 
> > When I go to start the car I am assuming I should have 12V across
> the coil,
> > which I do not at the moment. I checked voltage on the right side.
> The
> > voltage from the resistor is ok and I have continuity and ground to
> the
> > capacitor. The trouble seems to be on the left side. I've got
> nothing coming
> > from the White/Slate wire that leads to the ignition control behind
> the
> > driver's seat.
> <SNIP>
> 
> The White/Slate colored wire delivers impulses from the Distributor.
> The Distributor rotates, and creates the pulses. These pulses are
> then used to trip the RPM relay, drive the Tach, and supply engine
> speed info to the Ignition ECU, and the Ignition coil. If the motor
> is stopped, you won't recieve any voltage/signal on this line.
> 
> Which reminds me. When you tested for voltage output from the
> Ignition Coil, were you cranking the motor, did you have the RPM
> relay jumped, or was the motor off?
> 
> -Robert
> vin 6585 "X"
> 
> 
> 
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