My friend has an lsj and has had bad problems with the motor misfiring and stuttering when 20% or more throttle we replaced the O2 because the heater went out on it. I think it could be a coil pack but its hard to say just wanted to see if anyone else had this problem.

 

whens the last time the plugs were changed?

 

no idea lol its his car but it's probably been like 25,000 mayble it needs new ones regardless and i told him to change them first but i couldn't get the one plug out.

 

Fixord someone had a ruber oring from a sparkplug socket melted onto the tip of the plug so i couldn't get it out, but the new plugs fixed it. Thanks Dart for the help.