On a 2003 Jeep Liberty, the spark plugs are located in the engine cylinder head. For the 3.7L V6 engine, you'll find the spark plugs on each side of the engine, accessible from the top. You may need to remove any plastic engine covers to reach them easily. Make sure to use the appropriate tools and follow the manufacturer's guidelines for replacement.
What distributes power to spark plugs on 2002 jeep liberty
It is moderately easy to change the spark plugs on a Liberty, although it is rather tricky because of the gap between the spark plugs.
i WORK IN AN AUTO PARTS STORE AND WITHOUT A DOUBT THE BEST SPARK PLUGS TO USE FOR THE JEEP LIBERTY WOULD BE NGK BUT...THE ORIGINAL EQUIPTMENT IS CHAMPION.
Use what ever Jeep built it with.
A Jeep Wrangler has one spark plug per cylinder.
60,000 miles.
On the gas engines, one per cylinder. Zero on the diesel.
The gas engines use one per cylinder.
30,000 miles is recommended for spark plug replacement on all Chrysler/Jeep vehicles, not just the Jeep Liberty. Not only are plugs recommended at 30,000 miles, shock absorbers are recommended as well. As a mechanic for the Chrysler/Jeep Corp., i can say with confidence that it is not entirely necessary to change plugs and shocks at the 30k mile mark. Basically, "If it ain't broke, don't fix it!" (however, i do recommend at least checking the plugs at 30,000 miles)
There are 6 spark plugs on a 3.7 liter. They are located on the outside perimeter of the intake manifold and under the coil pack for each cylinder.
Look on the white sticker under the hood where the engine size is. It should be there. IF not, would need to know the engine size. Added: for my 2003 3.7 V6 the sticker says .040"
passenger side 2-4-6 driver side 1-3-5