No leading spark, coil or igniter?
#1
No leading spark, coil or igniter?
On my 85 gsl, I have excellent trailing spark and no leading spark. Cap, rotor, and wires are all brand new. I have the online FSM as well as a haynes manual that outline testing both coil and igniters, but to be honest I am completely lost with this topic. Is there any way I can switch the coils and see if only the leading plugs fire then, or is there an easy way to check without measuring with an electrical tool? I have a test light, and that is about it. I've seen several threads on no trailing spark, but am having a hard time with this. Can someone point me in the right direction? Thanks, Justin
#4
I checked the + terminals on both coils, and there is power to both. Tomorrow I will pop off the igniters and switch them around, and that will tell me what's up! So to summarize, if the leading starts sparking and the trailing goes dead- bad ignitor. If the leading fails to spark afer the igniter swap- bad coil. How does that sound guys? Thanks for the help.
#7
The tach was bouncing as I turned the car over today. I pulled the distributor and used mar3's thread to test both igniters. The leading igniter did not illuminate the test light, so I am on the hunt for a replacement j109. Ebay has them for $33 shipped, is this a good price? I am going to pick up an ohmeter soon and check that both ignition coils are working good as well. Thanks for the help!
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