Started truck up yesterday afternoon, and immediately had a flashing SES light, and then it stayed on, truck was running rough and shakin' crazy... I shut it off and hooked up my scanner, and read codes 1300, 0301 and 0305. i know the 0301 and 0305 are misfires, but this 1300 i have no idea what it is.
I've recently changed plugs with Bosch +4s and Wires are Magnecor 8mm...
141,000 miles 99 disco 2
from time to time i get misfire codes but truck runs grate in spite of all that

 

1300 is an emission misfire which has been caused by #'s 1 and 5 misfiring.
How did it run yesterday? Pull both plus and see if they are wet/coolant and get back to me.

 

ran fine yesterday before when i went on a drive for a half hour, then later i started it up and thats when it happened and it was running pretty rough, mike...
Better yet I'll pull the plugs to 1 and 5 and I'll call you, I have your tele. #

 

Took out those 2 plugs and sure enough, the plug that was in #1 felt wet, #5 was dry...
and being new plugs about a month ago they looked a little black, and the porcelain looked kinda brown, what does this mean?

 

Hi guys, I'm having the same problem that you had while ago mentined above, I'm wondering if you can share your whole experience about fixing it? Thanks

 

I have a similar problem. Different cylinders though, #6 and #8. It's intermittent. I have started on the 60k service, including replacing with Magnecor 8mm and Platinum +4 plugs. All the plugs were fine except a few had some electrode erosion. The engine was running pretty crappy, missing on acceleration prior to changing them out but has been humming along since.

I've only gotten the SES once since and it was P1300, P0306 and P0308. I've pulled the plugs on 6 and 8 and they looked normal.