CEL 302 #2 Miss Fire, Denso Plugs but might be time to change them JB4 Map 0 Logs

MrSmoofy

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Based on forum responses I think it's just time to change plugs. I have had a JB4 and Denso plugs a while I can't find where I wrote down the millage when I had them put in.

Story though is yesterday I went for my routine free oil change at the stealership. The said "It's time to rotate your tires, a throttle bottle cleaning and engine treatment" I said umm no your tech is an idiot that is a GT2 with staggered tires. They went back to the tech and came back and said I was right their mistake and said they would do the other stuff for free. So yea free why not.

Later in the day I got on it on the interstate and noticed something weird the road was a little rough so thought maybe the tires slipped. Then yesterday afternoon driving home I got on it in Map2 and got CEL and limp mode and I didn't think the car would make it home, wanted to stall at the light.

JB4 wouldn't read the codes not sure why. A friend came over with his reader and it showed 302 misfire on #2. We reset it and then drove to the gas station on map 0, did some pulls no CEL. At the gas station filled back up with 93 and back to map 2 and did some pulls and immediately CEL again the same code with his reader, JB4 still couldn't read the codes.

Left it on Map 0 did some more pulls last night and no CEL but I can feel some hesitation during hard acceleration.

I have a total of 27k miles now. Denso Plugs I'm told I'll get 10-15k miles on them. So while very weird timing with the stealership touching the car my gut from people are saying it's just time for plugs. I've ordered some HKS and will need to find someone to install them or show me how as I don't really have the tools for it.

I've attached Map0 logs, and while I can't really read them myself compared to past logs I've looked at I think I do see where it's pulling because of the missfire.

Would like to get others opinions. It was suggested to move the plug and coil to another position but again don't have the tools or know how for that so can't just do that myself.
 

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Could be plugs, could also be whatever the "engine treatment" was. There was another thread about someone getting something done like that a dealer and throwing codes. Also Stinger's with Staggered setups have 6k mileage rotations, it's side to side swap according to the manual.
 
Could be plugs, could also be whatever the "engine treatment" was. There was another thread about someone getting something done like that a dealer and throwing codes. Also Stinger's with Staggered setups have 6k mileage rotations, it's side to side swap according to the manual.

I'll have to look for that. Also these tires are new only 1000 miles I think they were just looking for money.
 
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My densos were TOAST after 20k, here's my post with Pics:


If you have anywhere near that mileage on them I'd change the plugs.
 
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Thanks for the links guys.
 
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