2001 Jaguar S-Type

Engine Performance problem
2001 Jaguar S-Type 6 cyl Two Wheel Drive Automatic 90000 miles

My RMP fluctuate and the engine drags. The engine does not pick on time, also when the speed get to 100 speedometer its start jarking. A scanner was used but indicate cylinder 1 missfiring and i've changed the plugs and service the norzzle but all to no avail.

Please I need a help from here. Thank you
Olatunde omojola
March 22, 2010.

Replace #1 coil

Dave H
Mar 23, 2010.