Iraqvet05 wrote:
If you have ever replace spark plugs you can easily change the 6.0 plugs and it is NOT a 2 hour job for a skilled shop. I replaced my plugs and wires on my 6.0 a few months ago and it runs much better. There is a short set and a long set of plug wires because GM used two different coil manufacturers for a few years and their design dictates the length of wire you need... see here (customer image at top right). I used ACDelco 41-110 professional iridium plugs at $5.70 each (USD). This is a $90 (US) project if you do it yourself. Each coil is above each plug so it's a no-brainer....no messing up the firing order. And yes, a clogged fuel filter can cause it to run rough. The filter is inside the frame rail under the driver and also easy to replace.
^^^^^^ THIS!
I was shocked at the room in the 6.0 I drive at work. This thing is waaaaaaaaaay easier to change plugs in than my 69 small block pickup.
Just buy some irids and put them in. This job is not like putting plugs on a V10 Ford.
It could be either the fuel filter (lean misfire) or a plug misfire.
