Ncb

Here's the problem I see with most reports on spark plugs. A worn out set of stock plugs are replaced with brand X and then suddenly that plug is the best because it idles smoother and mpg improved a bit. It's not a good comparison because worn out plugs are compared to new plugs.

I forget which plugs I installed, but my mpg dropped a bit. I have a set of stock replacements to install and I'm curious to see if mpg improves a bit not that it matters. I only track mpg to trend the health of the engine.

Ncb

Why is that snarky? There's nothing wrong with the stock plugs. I pulled mine at 45K miles and they were still good. Just about every piston powered aircraft in the world is running Champions. Ronjenx is a good forum member and is extremely knowledgeable.

arjeeper

Exactly. People just get so sensitive these days. He was providing a countering perspective. Use the info or not, but it wasn't snarky.

09DARKORANGEJK

No I get it but it's all delivery his input is wanted but I don't see the need for sarcasm.

I also agree with you when replacing something worn out with new it will always feel better and if one person has a minor inconvenience with a product suddenly it's the worst product out there. I simply want to take the input of others combine them and try to make the best from it

ronjenx

I don't want to continue in the direction we headed, but there was no snarkiness or sarcasm in the intent of my first post. You pointed out that shop mechanics don't like Champion plugs. I wanted to point out that I and lots of people I know on the road and in the air have not had any problems with Champion plugs. In fact, quite a few people on this forum have tried other brands and returned to the OEM Champions because the JK didn't run well on the other plugs.

I will admit my other post got a little sarcastic, triggered by your "snarky" comment, which I didn't understand.

I'm all for staying technical in the forums. The internet by nature makes it difficult to "hear" what one really means in a written post.

09DARKORANGEJK

Agreed the way it read to me was a little back handed but not a problem let's move on.

I've heard a lot about different plugs from good to bad and I think a lot has to do with what motor the plugs are in. I didn't check to see what plugs came stock in the jeep so obviously if there champions I don't have a problem with them they ran fine for the first 50,000 just seem to be slacking of late thats why I'm doing the tune up. Wanted to enquire mainly about the platinum 4's because I had them in my older TJ and felt that it ran better with them and the gas mileage was surprisingly better. I wouldn't have believed how much better if I didn't see it with my own eyes. Side note I wish that 4.0 I6 was still in these jeeps but that's another story haha

mistasparkl

Champions have traditionally been run in Jeeps for years. I'd just go w/ the factory champion plug, no complaints. Currently I run the NGK iridiums, only because thats what Ripp recommended for their SC setup.

gunbo75

I have a set of NGK v-power plugs lztr5a-13 4306 if anyone needs them they are for 3.8 let them go for $20.00

Ncb

If the ignition system is in good shape a quality brand spark plug will get the job done. The key is having a plug with the correct heat range. All the different types of plugs are marketing hype. I pulled the stock plugs on my 2009 at 40K miles and they still looked new. The gap was perfect. New technology engine run a lot cleaner and plugs last a long time.