freal

It's time for me to get new spark plugs. I'm at 93k and I'm misfiring. But it comes and goes and it doesn't throw a code. So I'm starting with the plugs then if it's still misfiring I'm gonna try the coil packs. Hopefully it's nothing too serious. It basically sounds like a mini-cummins. Lol. I do have 115k mile warranty through Carmax if the plugs and coils don't fix the issue.

So my question for you all is what brand plugs are you guys running?

Gville350

iTrader: (10)

^OEM is your best bet!

I also you have an IS250? Have you read about the carbon build-up issue those motors have? Are you experiencing any idling issues and rough running?

freal

Sorry I should have specified I have a 350. Idk if I'm paranoid about the misfire coming and going but I do feel like it's idling rough.

Sffd103

iTrader: (16)

Sign up for Sewell Lexus' website and receive a discount for CL members when you order the oem plugs. That's what I did and it was much cheaper.

Gville350

iTrader: (10)

I'd start with the new plugs and work from there.