02'35thSS

I have a 95 Buick Roadmaster and it has no spark. I just replaced the opti spark thinking it was that but still nothing. The car has spark at the coil but does not have spark at the plugs. If anyone has any ideas i would appreciate your help thanks Matt.

IllusionalTA

iTrader: (9)

stock ignition? I've seen msd boxes that give those symptoms and still no fire at the plugs... I'd try a new coil might not be hot enough... Opti sound like it's working fine...

ss.slp.ls1

iTrader: (36)

How did you verify spark at the coil?
Maybe a bad coil wire?

I would try this test:
http://shbox.com/1/4th_gen_tech2.html#opti_test

WARDOG

+1 on bad wire , by the way how old are your wires??

02'35thSS

They are the stock wires/coil its my brothers car so i dont know how old. we tested the coil by hooking up a old coil wire to it with a spark plug it had spark.

02'35thSS

thanks, i did the test and i found out that it was the coil wire. I replace all of the wires.