Bill
Your problem sounds like the points arent working properly for some reason.
You can check by manually opening the points and looking for spark. Remove
the cap and rotate the engine until the points are definitely closed.
Remove the coil wire from the distributor and locate it about 1/4 inch from
a grounded surface. Turn on the ignition, then manually open the points
with a screwdriver. You should see a spark if everything is working ok
(then your problem could be the cap or rotor or wires). If not, and voltage
is present on the primary side of the coil, look for the possibility that
the points are permanently grounded. The coil side of the points should be
isolated from ground - there should be a plastic grommet right underneath
the wire lug where the wire attaches to the points. If you have an ohmeter,
you can test the points operation by disconnecting the wire from the points
at the coil and attaching one side of the ohmeter to this wire and the other
side to ground. As you open and close the points, you will see the ohmeter
go from zero resistance to infinity.
Hope this helps.
John Lumia - 76 TR6
Louisville, CO
> Date: Fri, 14 Sep 2001 11:06:12 -0500
> From: "Bill Cutshall" <bill@steelstudios.com>
> Subject: Need Help with Ignition Problems
>
> I have been trying to diagnose the problems with my 76ish TR6 and I am at
> my
> wits end.
>
> The symptoms are pretty simple. There is no spark from the coil.
>
> I have replaced the coil. Still no spark.
> I have tested the ignitor on another TR6. It works there.
> I have charged the battery. Still no spark.
> I have tested the voltages in the system. 12.7 into the coil. 1.7o
> across
> the coil (old) and 2.4o (new).
> I have jumped the coil directly from the battery. No spark.
> I have used different plug wires. No spark.
> I have checked the point plate ground in the dizzy (I was running out of
> ideas) and it is grounded. No spark.
> My friend verified the potency of the coil using the 'how far up into my
> body cavity will my nuts climb if I get shocked' test. The new coil is
> very
> solid according to his considerable experience with that particular test.
>
> I need ideas. My next step is to buy a new ignitor as that is the only
> thing I can think to do. I hate to just throw money at a problem though.
> Thoughts?
>
> Also, I ran a cold dry compression test on my TR6 and came up with 147lbs
> +-1lb across all 6. The page in my Haynes manual I need to reference is
> missing. Any help on appropriate compression would be appreciated.
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