i OWN A W REG S TYPE 3.0L MANUAL DRIVE JAGUAR, (ISSUE): WHEN ACCELERATING THROUGH THE GEARS THE CAR SHUDDERS,THEN SETTLES DOWN, NOT A DRIVESHAFT ISSUE, HOWEVER COULD BE SPARK PLUG/DISTRIBUTOR CAP PROBLEM ANY IDEAS AS TO THE POTENTIAL PROBLEM, GRATEFULLY RECEIVED
THANKS
JIM