Hi all,

Just got back from two back to back deployments, started up my disco and it killed me with code. Codes are:

P0300
P0303
P0302

and pending Code:

P1668

Truck is a 1999 Disco II with 65000 miles; lots of mods but none engine related.

Obviously the first three codes are related to misfiring cylinders. My first thought was new wires and plugs. I last replaced these back at approximately 30000 miles in 2004 with Magnecor 8mm. The rig is running a little rough. Any thoughts/suggestions?