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Old 12-08-2009, 09:54 PM   #7
Mike C
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Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,740
Re: 86 K20 Weak Spark

The Module will sometimes do that, but not as likely as the coil. Next, replace module. Check to make sure you are getting 12 volts to the cap with the key on. Honestly, I had these same issues with my 86 K30 which is why I ponied up the $85 for the ALL NEW distributor.
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