Message: During a long drive(after engine has warmed) my truck jurks(hard) as if the engine stops & starts in less than a split second.
Will do it every few miles or so at times. Have new coil,computer,wires & plugs, pick up coil,ect.
Could it be timeing chain or dist? Seems to act up only after 50-60 miles of driveing. Thanks JC
Subject: after an hour or so