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Check the power going to the HEI. I suspect you are not getting power to it. Obtain a 12V circuit tester and backtrack the power feed to the HEI. I hope this helps you. Mark check for a fuse in the fuse block.

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โˆ™ 2005-11-29 21:45:38
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Q: 85 z28 305fi I have no spark. replaced hei coil and pickup coil I had the spark module checked and it was fine any ideas would be great?
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