2010, occasional misfire

[RDM]

2010 PP, 126k, no tune, all stock. I have had this car for about a year, runs fine but occasional misfire when under some load, I don't ever really run it hard, its my DD I have had one misfire code, dealer says likely a coil, or that's what they would do. So I am going to replace the plugs myself, considering doing all the coils, since they will be out. Any advice on the coils? OEM? aftermarket? Maybe later will do an Orzti kit. I have done all the fluid maintenance when I got it, based on what I learned here. Learned a lot lurking on the site, so thanks.

 

[SM105K]

Move the coil that is miss firing with a known good coil. If the misfire moves....then you know.

 

[SeanDev]

Another thing to look at is the boots on the coils, with age they crack and will send spark out. There only about 30-40 bucks for new boots, I had that issue on my F150. If you go for new coils OEM or MSD would be the only way to go. Please don't attempt to put in cheap after market coils, I learned my lesson the hard way on those. Had one literally explode. But if you decide to keep your originals, new boots on them should take care of the misfire.

 

[RDM]

Another thing to look at is the boots on the coils, with age they crack and will send spark out. There only about 30-40 bucks for new boots, I had that issue on my F150. If you go for new coils OEM or MSD would be the only way to go. Please don't attempt to put in cheap after market coils, I learned my lesson the hard way on those. Had one literally explode. But if you decide to keep your originals, new boots on them should take care of the misfire.

Thanks for the info, new plus and boots this weekend.