Testing a Coil for 8N

This aught to work as an initial test of a coil. When you rapidly touch and release the wire to the negative post of the battery you should see a hot blue spark at the plug gap. Don't leave the wire connected else you might melt the coil.

This test would only show you that the wiring inside the coil is intact. Would not tell you if the coil is putting out recommended voltage.

The best tester is the tractor distribuitor itself in most cases.

Tractor ignition systems are NOT hard to work on.

Soundguy

soundguy

Unfortunately there is NO eazyway to otherwize test the non-running ignition system. Howsomevers; you can test the running ignition system with my calibrated sparkie tester made from enny ol'sparkie by bending out the side electrode for a full 3/16" gap and grounding the shell and connecting enny sparkie wire and crank yer engine and watch for a blue-snott sparkie to jump the gap. Iff'n its a wimpy yellowish-orangish sparkie, yer coil probably ain't nogood. But I'd check the points gap first for invisible corrosion and reset the points gap to 0.015".

For reference purposes, my eazy starting 6-volt 52 8N roundcan sparkies will jump a full 3/8" gap. ..... .HTH, Dell, yer self-appointed sparkie-meister