Your engine will be sputtering if you had a plug wire arcing out, the wires won't do anything to affect your valves, the ticking is probably a stuck lifter.
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Brad
1997 Eclipse Spyder GST 14.1 @ 100 MPH
1991 Eagle Talon AWD (HOW) 11.574 @ 115.29 MPH
1990 Plymouth Laser RS-T (Organ Donor) 13.19 @ 110 MPH