Farmall Cub

Hello everyone I have 6 volt negative ground with a pertronix ignition system and my second ignition coil just went out weak spark what could it be thanks in advance

What are you using for plug wires? I understand you must use only copper wire, no resister wire.

Who installed the initial Pertronix ignition system? If the tractor sat for 25 years it should have had the points type ignition system.

Have you solved the low psi compression? My opinion, if not you are wasting your time and money.

viewtopic.php?f=1&t=107187

My opinion again. Reinstall the points igniton system. Solve the problems cited in the above topic.

Seems like I remember somewhere if you leave the ignition on it can fry the unit!?!

I've had a 6v positive ground Pertronix ignition for almost 10 years now. Still has the same stock style coil, cap, rotor, plugs and plug wires from when I installed it. The only problem is the rubber grommet is starting to deteriorate.

Let's see. Almost no compression, low fuel flow, new Chineese carburetor, two Pertronix systems, now two bad ignition coils.

What else could go wrong??????

Solve the compression problem FIRST. No compression, the best ignition and carburetion systems won't make the tractor run.