The Ignition Switch Fault

So in early March, I was going to try and do an electrical test of my circuits to the fuel pump, but wasn’t sure how to use my tester unit properly. I therefore took a peek at the ignition switch which threw up this horror to me… evidence of things getting hot and a potential fire risk. Could something else be causing this? or was it the switch mechanism shorting out? There was fair bit of corrosion on the terminals and I wouldn’t be surprised if the internals were in a similar condition.

Original 4 position ignition switch looking a bit melted.
New ignition switch fitted just requiring some insulation tape to be wrapped around the connections.

So, Easter Sunday (1st April) and I finally get the energy to go out in to the garage, plus it wasn’t too cold, wet or snowy. I plugged in the new ignition starter switch that I got some time ago and cleaned up the terminals by cutting off the old melted insulation material. With the wires and spade connections exposed they looked to be in good shape and I didn’t think they needed a rewire, so wrapped them with insulation tape for further protection.

So, with the battery reconnected it all fired up, and the engine stayed running. I just need to re-tune the carburettor just as John had last year because I still had the flat spot even after putting in new jets.

Update 2nd April: The engine fired, ran for about a minute and then cut out, for it not to re-start – so back to square one.

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