99' I30 Misfires a LOT!

[mtcarlson]

Hey all,

My Infinity I30 misfires when idle and about 75% of the time accelerating and once I hit 60mph+ it eventually starts hitting on all cylinders.

In idle it sounds like it is going to die, but never does. Runs very rough. I took it to Auto Zone and their computer said it is misfiring on random cylinders. What should I do next? I can fix about anything if I have a manual. Speaking of, does anyone know where I can get a Haynes 99 Infinity Manual??? I've looked all over the net. FRUSTRATING!

Thanks a lot. Mike

[maxhopper]

Pull one of the spark plugs and make sure it's a NGK plug. If it's not, replace all of your spark plugs with the proper NGK plug.

[NutriaforBreakfast]

What have you done on the car before? Has it had any typeof tuneup?