Sonata GLS V6-27L (2002) | Tune-up and Engine Performance | Spark Plug TSB | Page 3384
Spark Plug: Service and Repair
Hyundai Motors does not provide specific instructions to replace the spark plugs on their V6 Delta (2.5/2.7) or Lambda (3.3) engines. However, for
replacing the rear bank of plugs, technicians have reported positive results by removing the upper intake manifold and any brackets and hoses that are
connected to it.
