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ljjp10 05-31-2013 07:35 PM

jeep feels 10 years younger
Decided to change cap, rotor, plugs and plug wires for normal maintenance. Old plug gaps were anywhere from 55 to 80. My 99 seems like its purring. Don't know if I.m imagining it or not. But seems alot smoother and snappy. Curious to see if mileage improves. Even wonder if I had a plug wire going bad. I swear radio is louder and alot clearer.:dance:

Big Cole 05-31-2013 07:56 PM

64 Attachment(s)
Did the same thing to my 99. Plugs were seriously eroded with .6 gaps. Replaced plugs and wires which made a huge difference. My rig idled better and I gained 2 mpg

tbensor 05-31-2013 11:09 PM

yea gap is .035 so definately would make it smoother

krisbman 05-31-2013 11:19 PM

Just put in some autolite Xp 985 iridiums in my 2000 TJ. Huge difference, now these supposedly come pre gapped at .035. Yeah right, I checked them and they ranged from .032- .042.

ljjp10 06-01-2013 07:48 AM

The gap on my new ones were way off to. Anywhere from .40 to .45. I put Champion platinums in.

Capt_Zoom 06-01-2013 11:59 AM

I gotta get around to doing this again.

thgr8alex 06-02-2013 12:34 AM

Ya ive got 130k on mine and dont know if PO ever changed out the plugs. Doing this in a few days, from a few different threads seems like ill be impressed with how much netter it drives. Who knows how far off mine are

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