I took on some water last night wheeling...the mud hole was deeper than I thought and now I got a cylinder 3 misfire. so I believe its just the spark plugs...everything seems to be ok, other than a moan, but I think its just the ac compressor. Anyways to the point, what are some of the best spark plug for the jeeps? It's a 2001 if that matters at all. Thanks ahead of time!

 

Since it's a 2001, NGK coppers

 

Sweet thanks!

 

Now what about the spacing in them?

 

the gap requirements are on a sticker under your hood with other info. I believe its a .035 gap but my 97 might not be the same as yours.

Edit: correct cap is. 035

 

Champion coppers, NGK coppers, or the ACCEL plugs. All are great. Gap is .035

 

Yeah mine is also .035. I just hear that ngk coppers are better for later models while champion coppers are better for earlier

 

NGK Coppers are my recommendation for the 00-01 with the distributorless ignition. Champions are okay, but the gap seems to enlarge out of spec quicker than the NGKs do.

Gap is .035 for all of the 4.0 engines.

 

I went with the Bosch coppers...fired right up when I got done, so at least no hitches there...the only thing I have an issue with now is my ac compressor has a deep whine but only when the clutch for it is disengaged, when it kicks on, noise is gone, and it is really annoying. Any ideas?

 

I run e3's with a new/full Accel ignition set ( wires all the way to pick up coil) runs frickin awesome!!

 

so whats good for an renix....?

 

Champion coppers, gap is .035

 

thanks, wasn't sure cause he said "since its 2001"

 

Replace the A/C compressor (have an A/C shop do it, they have the tools required by law).

 

I used NGKs, have had em for about 5,000 miles. So far so good.