john deere 318 no spark


Old 10-25-05, 08:40 PM
Thread Starter
Join Date: Jul 2005
Posts: 11
Received 0 Votes on 0 Posts
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
Old 10-25-05, 09:02 PM
v8driver's Avatar
Join Date: Sep 2005
Posts: 767
Received 0 Votes on 0 Posts
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.
Old 10-28-05, 12:54 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 17,286
Received 23 Votes on 20 Posts
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.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title: