Let's talk plugs!

Chief BK · **Posted:** Thu Aug 14, 2008 8:18 pm

I'm ready to put a new set of plugs and wires in. Everything is currently stock.
What are you guys using for plugs and wires and why?
I've always been partial to Bosch in the past, but am very curious about the Pulstar Pulse Plugs. Is anyone using these and are they living up to the hype? Increased hp AND mileage? Seems questionable to me.

DryBones · **Posted:** Thu Aug 14, 2008 8:25 pm

1st things 1st. Open the hood and look. There are no wires. Each cylinder has it's own ignition coil right on top of the plug. Just change the plugs and move on, unless you get weird misfire codes on the CEL.

BTW, welcome to the madness known as LOST :lol:

ROWA · **Posted:** Thu Aug 14, 2008 9:11 pm

I had the top of the line Bosch plugs, lost about 1 MPG and started to idle rough. I replaced them with the Autolite double platinum, smooth idle and better mileage. Go figure, spend more and get less. Stick with the Autolite's they work.

Jeep Dawg · **Posted:** Thu Aug 14, 2008 9:21 pm

Chief BK wrote:

I'm ready to put a new set of plugs and wires in. Everything is currently stock.
What are you guys using for plugs and wires and why?
I've always been partial to Bosch in the past, but am very curious about the Pulstar Pulse Plugs. Is anyone using these and are they living up to the hype? Increased hp AND mileage? Seems questionable to me.

I am using the Pulstar Pulse Plugs 4 rite now and they SUCK!

I noticed a drag in MPH and I feel that the engin is some what sluggish. Either it is the plugs or the KJ hauling my fat stupid around. Either way the Pulstar Pulse Plugs I woud stay away from.

I am going back to my good ol CHAMP PLUGS!

Chief BK · **Posted:** Thu Aug 14, 2008 9:33 pm

Thanks for the heads up on the Pulstar's.

Feelin slightly stupid on the wire remark. I haven't looked at the plug setup. It's been idling just rough enough to notice. The only thing I can figure at this point is plugs. She's only got 19k on her. All other routine maintenance has been taken care of since I've had it.

DryBones · **Posted:** Thu Aug 14, 2008 9:37 pm

nothing stupid about learning how easy it is to tune these things up. 6 plugs, a fresh amsoil drop in air filter and a PCV valve in about and hour and you are good to go. Just make sure you have extensions and a swivel socket for that back plug by the coolant bottle :wink:

JJsTJ · **Posted:** Thu Aug 14, 2008 9:46 pm

I have never had a bad experience w/ the factory plugs, NGK's in Any vehicle I have used them in....... all of them I have owned for 20+ years. Also used Nippondenso's (under the ACCEL name) w/ good luck and BOSCH.

Chief BK · **Posted:** Thu Aug 14, 2008 9:51 pm

PCV Valve? I've changed oil religously, but it's worth a shot.

LIV42DY · **Posted:** Thu Aug 14, 2008 10:03 pm

Bosch and NGK's... Cant go wrong.

CrossBones · **Posted:** Thu Aug 14, 2008 10:09 pm

A friend of mine in the wholesale auto parts business just today sent me over some Denso iridium plugs. He sells most brands - Denso, NGK, AC Delco, Motorcraft, Champion, Bosch - and claims nothing is better, or sells better than Denso, due to the fact they get almost no defect returns aside from an occasional rare shipping damage. The plugs he sent me for my 3.7 were near perfect (.040).

sleeve84028 · **Posted:** Thu Aug 14, 2008 10:12 pm

NKG Platinums or Iridiums.

stay away from that pulse star plug. The only thing pulsing will be your blood pressure after you spend all that money for snake oil.

jeepkj02 · **Posted:** Thu Aug 14, 2008 10:38 pm

sleeve84028 wrote:

NKG Platinums or Iridiums.

stay away from that pulse star plug. The only thing pulsing will be your blood pressure after you spend all that money for snake oil.

Hahaha.... :lol:

But seriously, Autolite Platinums are the best!

myjeepwalks · **Posted:** Thu Aug 14, 2008 11:22 pm

LIV42DY wrote:

Bosch and NGK's... Cant go wrong.

x2 that's what i use.

never had much luck with champions or autolites in prev vehicles, although never used them in the kj. maybe they've gotten better since i last used them.

06 KJ Sport · **Posted:** Thu Aug 14, 2008 11:32 pm

Densco's, here is the post I put up awhile back....

http://www.lostjeeps.com/forum/phpBB3/vie ... hp?t=34279

Jeepjeepster · **Posted:** Fri Aug 15, 2008 12:21 am

Autolite platniums here.

ohv_kj · **Posted:** Fri Aug 15, 2008 9:20 am

autolite plat are one of the best plugs to run with a stock dis system...all the jeeps i find also run these plugs...not because they are cheaper but the engine are simple and don't need the high out put plug...go w/ autolite platnum

Dje Ryu · **Posted:** Fri Aug 15, 2008 9:44 am

Not to get OT here but, have you checked the O2 sensors, as well? Mine started idling /running rough a few weeks before it finally threw a CEL and code, when the wire clip for sensor 2- bank 1 broke and the wires started rubbing on the front driveshaft.

Chief BK · **Posted:** Fri Aug 15, 2008 10:21 am

Quote:

Not to get OT here but, have you checked the O2 sensors, as well?

I would be shocked if this were an issue at 19,000. I'm going to go over it today and put plugs in. If necessary I'll continue to work my way around until I find the culprit. I'll be off to get those plugs in about 2 hrs. Any last words on plugs?

Thanks again!

tommudd · **Posted:** Fri Aug 15, 2008 10:28 am

no additional info except high priced plugs are a waste ! I changed mine out at 19000 the first time and do it every 20,000 to 22,000 , so far 5 sets and getting ready this weekend for the 6th set, cheap to do and makes a huge difference :lol:

iambob · **Posted:** Fri Aug 15, 2008 10:46 am

same as above Autolite Platinums work great for me improved milage a little but these days a litttle goes along way

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