Do you get spark from the tower of the coil?
Silicon is a dandy insulator. That could
be one of your problems too.
Mark
----- Original Message -----
From: "Patton Dickson" <57healey@gmail.com>
To: "Healey List" <healeys@autox.team.net>
Sent: Wednesday, October 29, 2008 4:07 PM
Subject: [Healeys] Bringing it back to life, little spark, maybe coil
>I rebuilt the Welbro fuel pump that was in the car when I got it
> yesterday, and tried to start the car for the first time in 10 months
> to no avail. I pulled the plug on #3 and I wasn't getting any fire.
> Power was on both sides of the coil, and the points were sparking. I
> then noticed that my new distributor cap button had stuck up in the
> cap. I used silicon spary and got it loose and out, and now I have
> very intermittant spark. Almost infrequent enough to say none.
>
> A file I had printed on troubleshooting ignition circuts, I think from
> Barney Gaylords site, said to check the coil first with a multimeter.
> The coil is a Lucas HA 12, and if the 1156 is any indication, it is
> the original. I own a Greenlee DM-200 multimeter, but don't know how
> to use it except to check continuity. I downloaded the manual
> (http://65.36.183.19/greenlee/im/im1400rev02.pdf) and think I figured
> it out (it says it automatically sets the ohm scale)
>
> The troubleshooting file I have listed 1.5 to 3 ohms as normal for the
> SW and CB posts (and mine reads 3.2 ohms) and the SW and HT should be
> between 6000 and 3000 ohms (mine reads 6.84 kOhm). So, if I am
> reading my multimeter right, the coil has gone out of spec. Are the
> numbers I am comparing them to the right range? Does anyone have a
> known good Lucas HA12 handy to see where the numbers fall?
>
> It was running fine when the fuel pump went out, so I don't know what
> could have changed internally to make it go bad.
>
> Thanks
> Patton
>
> --
> Patton Dickson - http://Austin-Healeys.com - Plano, TX
> 1957 Austin-Healey 100-Six "Built to run 'til the road wears out."
> 1977 Newport '28
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