Simon,
Thanks for the help! I have the early lucas electronic ignition in
my midget, hence, the info about points opening and closing etc,
does not directly apply. I think for the sake of troubleshooting, I
would be better off with a point ignition! The manual's advice is
similar, but offers no troubleshooting guide with the electronic
distributor. Go Figure! I have both the Haynes and "MG 1500"(BL)
service manuals. I got frustrated with the inability to test things
thoroughly, and went out and bought a coil and ballast resistor, but
still no spark (at the coil lead). sigh...
Dave
Simon.MATTHEWS@st.com wrote:
>
> Dave this 'should' be simple! First, check the low tension (LT) side.
>
> Check that with the points closed, you have a good connection from the
> other side of the coil (the side that connects to the points) to
> ground. Then check that with the the points open, you don't have any
> sort of connection. If this is OK, then I would instantly suspect the
> condenser (capacitor) on the points. This could be shorting when the
> points open (there should be approx. 300 volts on the low-tension side
> of the coil at ths time)
>
> If all these check out, then you must have a problem on the HT side --
> just as you would look for a spark from from a plug, pull the
> king-lead out of the distributor and see if you get a spark on
> cranking. If you do have a spark then replace HT leads, distributor
> cap, etc.
>
> If not have a spark, but the LT side is OK, then suspect the coil.
|