plug wire diffrence

[screamin86]

Well one ill have to buy some wires regardless since now the motor I'm using for my swap is missing a wire and it bothers me knowing I have a missmatched wire on my yukon lol. Another thing is idk which coil could be at fault. I kept all the plugs and numbered them so I know where they came out ill post pictures of them when I get off work. I didn't know what the firing order for a lsx motor was right off so I numbered them like a old sbc when I pulled each one. The driverside plugs had much more soot than the pass side plugs. I had also started blowing black smoke since this code came up and with it idling over snow the snow would get covered with soot. After I changed the plugs out today it seemed to start easier and idle smoother especialy after I let it warm up then reved the snot outa it a few times and covered the snow in my front yard with soot!

[oleshifty]

each coil is above each cylinder... the order doesn't really matter

if you're getting a po300, its random misfire, probably not any particular plug/wire/coil.

If its a Po30# that cylinder has mis. (be it plug/wire/coil). I'd do plugs/wires first. Especially with your mileage. If you still have a light, and it's a specific cylinder try the coil. Could also be an injector, thought kind of unlikely.

check your pcv, if that year still has one. I checked my moms other day, and it was missing the check valve...explains why her truck has been going thru oil between changes. That's only thing I can really think of that would cause "soot" unless you accidentally put diesel in it

[screamin86]

Well I've got the papers that showed the code ill look at it when I get off work. I know the coils are for each cyl I labeld each old plug so I knew where it came from so I can look them over.

[screamin86]

No I didn't put diesel in it lol but ever since the code you can smell a strong odor of gas from the exhaust and black smoke if you get on it after being easy on it for awhile. Actualy my wife drove it the other day to the store and back 1.5miles each way and said it idled rough when she was leaving the store and I watched when she backed in the drive and it was puffing black smoke the whole time.