Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

john deere 318 no spark

njjeter's Avatar

Join Date: Jul 2005
Posts: 11

10-25-05, 08:40 PM   #1  
john deere 318 no spark

i inherited a model 318 lawn and garden tractor with an onan engine that had been sitting for 5-6 years in a shed. trying to get it started, no spark. changed points, plugs, condensor, new battery, nothing. have power to the primary winding of the coil. one dealer said no way to check the coil short of replacement (over $100.00 for the part). any thoughts??

Sponsored Links
v8driver's Avatar

Join Date: Sep 2005
Posts: 767

10-25-05, 09:02 PM   #2  
the coil should be able to be tested, one way to try it on another engine...but for it though, i'm sure the points and all are set right, have you tried the coil without the kill wire? otherwise it just very well may be the coil.

cheese's Avatar
Forum Topic Moderator

Join Date: Jul 2001
Posts: 16,567

10-28-05, 12:54 AM   #3  
To test the coil, connect the positive side of the coil to 12 volts, then connect another wire to the negative side of the coil. With a spark plug in the coil wire, and the plug touching ground (negative), touch the wire on the negative side of the coil to ground and then remove it repeatedly. This should produce a spark at the spark plug each time you remove the wire from ground.

"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

God bless!

Search this Thread