slufoot733 70 #1 Posted October 12, 2010 I am at my wits end on this. It ran fine the other day but for two days now I cannot get a spark to either plug. I've checked the ignition switch, all safety switches, the condenser, etc. I have good 12v to one side of the coil and when I crank the engine I have a good pulse on the other terminal. Everything seems ok right up to the coil but no spark. Here's a photo of the type of coil on my tractor: http://s951.photobucket.com/albums/ad357/slufoot733 (can't seem to get pic into this post) Anyone know which terminal the battery connectes to and which one the condenser goes to? I don't think it was wired backwards but who knows. Any help would be greatly appreciated, Kevin Share this post Link to post Share on other sites
pond195520032003 27 #2 Posted October 12, 2010 pull the cover off the points to see if they are firing!! Share this post Link to post Share on other sites
Save Old Iron 1,563 #3 Posted October 12, 2010 coil (+) hooks to battery voltage coil (-) hooks to points Share this post Link to post Share on other sites
Trouty56 565 #4 Posted October 13, 2010 This coil looks like mine only yellow. On mine the positive wire connects to the near post and the point wire and condenser connect to the far post. Share this post Link to post Share on other sites
Save Old Iron 1,563 #5 Posted October 13, 2010 Interesting comment I found in a kolher twin service manual (regarding hooking up ignition coil wiring in reverse). "Reverse polarity can require up to 8,000 more volts to fire plugs" Share this post Link to post Share on other sites
slufoot733 70 #6 Posted October 13, 2010 Thank you, all replies are appreciated. The points are firing, I can see the spark. The wiries are/were on the correct terminals. I have also researched this on the net and found a site that explains how to check the ohms of the coil. It seems that my coil is not within specs, I suspect I will have to replace it. Oh well, . Thanks, Kevin Share this post Link to post Share on other sites
