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"
the stock spark plug is the ngk ifr6l11 gapped at 39 to 43
For the XP iridiums. Its .50 to .51
spark plugs for vehicles with electronic ignition come pre gapped when purchased .044
Platinums are gapped at 0.60, and iridiums are typically gapped at 0.40... you shouldn't try to change the preset gaps.
NGK recommendations are 1.8Ltr 93 on BKR6E-11 pre gapped 2.0Ltr 03/97 on PFR6G-11 pre gapped 2.4Ltr10/98 on IZFR5B pre gapped 2.5Ltr 03/97 on PFR6G-11 pre gapped Source 2007 NGK spark plug catalogue .
According to the 2003 Ford Expedition Owner Guide : For the 5.4 and 4.6 ( the spark plugs are gapped at .052 to .056 inch ) * confirm with the Vehicle Emissions Control Information ( VECI ) decal located in the front of your engine compartment ( it will show the type of spark plugs to use and the spark plug gap )
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.
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.
8 spark plugs
4 Spark plugs
2002 galant , can't find the spark plugs
To change the spark plugs in a 2003 Acura EL 1.7, first, ensure the engine is cool and disconnect the negative battery terminal. Remove the ignition coil or any covers to access the spark plugs, then use a spark plug socket and ratchet to carefully unscrew the old plugs. Install the new spark plugs, ensuring they're properly gapped according to specifications, and torque them to the manufacturer's recommended setting. Finally, reassemble any components you removed, reconnect the battery, and start the engine to check for proper operation.