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Spark Plugs and Wires
Jeep Grand Cherokee Laredo
Jeep Grand Cherokee Limited

Where are the spark plug located on a 1999 jeep grand Cherokee loredo 4.0?


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Answered 2011-09-14 10:53:50

The spark plugs are under a long black metal piece that is located on the left side of the cylinder head. This also houses the spark plug wires. It is removed by taking out the three or four bolts that are located on the outside of the metal piece. Be careful when pulling out on the metal piece. Be sure to pull straight out or you will crack or break off a spark plug. Also be careful as the main wiring for the spark plug wires comes in at the left end of the metal piece (back next to the firewall) There is a connection plus at the end if you want to take the metal piece all the way off. I believe I just moved the metal piece "a side" and replaced the spark plugs that way.

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