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    erratic or random spark.

    I have a 91 XJ 4.0L. I just installed a rebuilt engine and it wont start. erratic spark from the coil. Its like spark, spark, pause, spark, spark, ... plugs at 1 and 4 get spark but no body else. every once in a while, it seems to want to start, and the coil will put out rapid sparks but it...
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