Did you figure it out?
Start off with the basics, Spark, Fuel, Compression. Starting off with Spark, check to see if your coils are working.
Buy a spark tester if you can ($5-8 see pic), easy do it yourself Tool to see if the Coils are working.
ALSO! Your wires may be jumping spark to the engine! Causing a no spark to plug and/or sporadic idle. Best way to test it is look under the hood at the wires at night to see if the spark is jumping around. (YOU SHOULD NOT SEE A SPARK) Discos have the crappy design of having the wires come from the back. And thin Spark Wires don't help.
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