I've already searched and come up with misfiring cylinder 6, 8, that can be resolved by tuneup.

My question is can I just change the cylinder 6 and 8 plugs and wires only, or do I have to do all of them? Also can I just pull the spark plugs and clean them off and see if that works?

I've never actually pulled spark plugs but from what it looks like I just take a wrench and unscrew them like the O2 sensors... easy enough right? And they should be simple remove and replace with no adjusting or anything?

 

The misfire will go away when things dry out most likely.

You probably need to change them all and use dielectric grease in all them too. You use a spark plug socket to remove them no adjustment as long as you buy plugs that are gapped to the rover.

 

You think I should just clear the faults and see if they come back? It seemed to run fine, I didn't drive it for fear or messing anything up. Sure didn't sound like it was misfiring or running on 6 cyl out of 8.

 

You most likely will be OK when it is dried out. But that might point to insulation on plug wires that is breaking down, and it will get worse, could also have a split in a plug wire boot, or even a cracked coil. Once it is purring again try looking under there in total darkness to see if you can spot little arcs.

 

A lot of people(including myself) have had this issue when going through water, misfires are common when water is involved. You should be fine.

 

What color are your plug wires, if grey, they are junk and all need to be replaced cause they are leaking which causes a loss of power a wet shorts to the engine block
Buy only blue silicone 8 mm wires like STI or Magnacor.
Then replace your plugs, all of them.

 

What no reply to my question, how badily are you wanting this help?

 

While we wait for him to reply back, can anything be gained as a quick temporary repair, or to make the cables last longer, if you spray them with silicone or wipe it on?

 

If you drive for 1/2 an hour - all the wires will dry out.
Clear the codes.
if the codes then come back - then you have problems..

I really cleaned my engine compartment and did not have any codea at all with a pressure washer.

but, I have new wires on the truck with new boots and all that.

Hummmm.
You may yes need new wires.

 

If you've never replaced spark plugs, replacing the plug wires (two or all eight) may seem like a daunting task. Because of the work involved getting to the coils, you most certainly want to replace all eight wires as a matter of course. Considering how the price of new Bosch coils have dropped over the past year, I would replace the coil packs, wires, and plugs if the engine has gone 50K without a tune up. Use the RAVE step-by-step and you will do fine. Be sure to use quality parts as others have suggested.