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2000 cadillac sls v8 northstar cylinder 7 isnt firing and already put new sparkplugs in and still isnt firing.whats next

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Check the spark plug wire and change if necessary. Also, if the spark plug wire doesn't fix it, change the coil pack for the number seven cylinder. If that doesn't fix it, check connections to the module underneath the coil pack and also change that if necessary.

Posted on Aug 02, 2012

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Iginition coil needs to be replaced. By for about 150 to 200, and take the Northstar cover off and replace. Very easy fix. Car will then run like a jet engine.

Posted on Sep 25, 2010

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Posted on Jan 02, 2017

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71f6763.gif

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Hope helped (remember rated this help) Good luck.

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53d6dfc.gif
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1cfe6bc.gif
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3f0dea3.gif
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