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Old 02-08-2009, 08:45 PM   #1
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2005 wrangler spark plugs

What are the best spark plugs to be used in a 2005 wrangler inline 6 4.0? Also what is the correct gap that should be in there? I have heard 34 or 35. Oh and if you know the correct tourque that the plug should be set at that would be awesome.

side note this site is great. I've already learned so much just from reading some threads.

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Old 02-08-2009, 08:48 PM   #2
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use the oe champion plugs. should be .035 and torque is around 25-30 ft/lbs off the top of my head, a haynes manual is the best 20 bux you'll ever spend.

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Old 02-08-2009, 09:00 PM   #3
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I just replaced mine today with Champions. Gapped at .035. What a difference. I thought it had the original ones, but it had NGK's in it. Now it idles smooth, runs nice and I noticed the power back. I just gorrila fist torqued them, lol. Dont forget the never seize like I did.
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Old 02-08-2009, 09:12 PM   #4
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be very careful with anti seize, a very tiny amount is ok, but anti seize gets thin with heat, and if you use any more than just a hair, it will leak down into the cylinder, i've seen it.

i used a hair on mine last time, but if you torque them properly you really don't need it, and then dont leave them in for 100k either.
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