Spark plug gap

[ChrisTJ the froggy]

Hello everybody,

I need help for my new spark plugs.
I bought Autolite irridium spark plugs for my TJ.
I looked for the spacing and didn’t found it. (TJ forum, manual service)
Is it already installed on the spark plugs or do I have to adjust on the 6?

Thanks a lot for your help, I’m lost....

 

[skrelnik]

I believe .035 for the older TJs and .040 for the newer TJs.

Here is a short thread on it.

https://wranglertjforum.com/threads/spark-plug-gap-for-4-0.17415/

 

[Dcook65]

I believe .035 for the older TJs and .040 for the newer TJs.

Here is a short thread on it.

https://wranglertjforum.com/threads/spark-plug-gap-for-4-0.17415/

You are correct, I think. My notebook says 0.035 for my 2001.

 

[ErikOffroad]

It says it on a sticker under the hood

 

[ChrisTJ the froggy]

Thank you all!
I saw the sticker under my hood.
But on the spark plugs I removed , the space seems longer.

 

[ErikOffroad]

That’s because as they wear out the gap becomes larger

 

[ChrisTJ the froggy]

I believe .035 for the older TJs and .040 for the newer TJs.

Here is a short thread on it.

https://wranglertjforum.com/threads/spark-plug-gap-for-4-0.17415/

I just find my mistake!!
The Jerry answer, the Mopar doc shows 0,03/0,04 INCH!!
My instrument works in CM....

 

[ChrisTJ the froggy]

That’s because as they wear out the gap becomes larger

Thanks Erick