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Spark plug repleacement - 2002 Cadillac Deville

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To replace the spark plugs you have to remove the coil part and the spark plug is underneath.

Posted on Sep 08, 2010


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Van idles fine but when going the the road giving it gas it acts as if it isn't getting the proper gas ... it back fires....repleaced fuel filter and pump, crank and cam sensior

sounds like the timing is off. check the firing order to be sure your plug wires are on the correct positions on the coil packs. if that checks out, possibly a timing chain may need replaced. i hope this helps
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Cannot get the back left plug out due to small space. repleaced all plugs and wires except back left and front right. Now the check engine light is on and idles a little rough.

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