Autolite spark plugs in 4.0 L Jeep

Ender did pass the time by typing:

Any solid-state device in a sparkplug would frag instantly. Spark plugs are either straight through or resistor and have varrying heat ranges.

A cracked plug should be replaced immediatly. Misfires and bad timing play hell on an engine.

As for Champion vs. Autolite, dunno.. I use Champion RC9YC4 (a cooler plug than you would use for a stock 4.0) Never had a problem with them.

You should learn to do your own plugs and wires, it's not hard and one hell of a lot cheaper than dealership prices.

nothing." Edmund Burke

Heh, yah it is. I always used to with my '62 CJ5 and my '69 CJ5 with the buick V6, but I have gotten lazy. Regarding the Champion solid state supressor, check this out. I was kind of skeptical too, but...

"Champion has patented a semi-conductor resistor, called SAC9, which suppresses RFI below SAE J551 standards and will not fail under any circumstances in an automotive engine. It is made up of strontium, aluminum oxide and copper oxide. This semi-coflductor will not be affected by either internal arcing or the wide range of temperatures found under the hood. It increases both the life of the spark plug and its ability to suppress RFI. "

Thanks for the response.

Ender

"The only thing necessary for the triumph of evil is for good men to do nothing." Edmund Burke

I run nothing but Autolite platinum-tipped plugs and in probably nearly

Jerry

from autolites they foul a

nothing." Edmund Burke

I have to agree with Jerry. I've used Autolites in everything with an engine that I have owned for the last 15 years including boats cars trucks, and snowmobiles. My first car I owned was a 1968 Dodge Charger. This thing went through a set of plugs a month when I used Champions in it. I tried AC's after that with a little better success. Once I switched to Autolites, I ran the thing as long as I can remember without fouling a plug. I personally haven't had any luck with Champions other than in my lawn mower. Some people swear by them, I swear at them.

Chris

First rule of spark plugs: If it doesn't start with a pull cord and have a blade under it, don't use Champions in it.

Buy as set of Bosch Platinum Plus 4s. Worth every cent.

Ditto on the Autolite platinum plugs. That is what I will stay with in my

I used Autolite plugs for many years before trying both the Bosch Plus4 and the Spitfire plugs. Neither one measured up to the Autolite plugs in this engine, so I'm back to the Autolites.

Terry

Thank you all for your responses.

Regards,

Ender

"The only thing necessary for the triumph of evil is for good men to do nothing." Edmund Burke

Funny, I was told the Champion Truck Plug was the best thing to put in my

Eric