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Decided to do a fairly comlete tune up (Seafoam, plugs, wires, rotor, cap, etc.). Everything was pretty mundane except I got the wrong rotor. Was the correct number for a 94 but had to get the one for the 93. Guess Jeep decided to carry mine over into the 94 year.

I decided to get the middle of the line Bosch 4003 platinum plus plugs. Gap was found to be .035 and that is what I found spec'd. Pulled the original plugs (I believe and with 83,xxx miles). They were the Champion RC12LYC plugs. Gap was an astonishing .065. And it was really running quite well.

The ground electrode was not worn much but the center electrode is worn down just about to the ceramic. Don't know just what it's length should be.

What gap have some others found when you replaced your plugs?
 

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A lot of the sensors and cap and rotor in my 94 are 93 parts too.
 
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