NGK ILZFR6011 Spark Plugs

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Jan 4, 2018 | 03:49 PM

#11

sayeedA

Thread Starter

Rock Crawling

Joined: Oct 2011

Posts: 450

Likes: 8

From: Austin, TX

Quote:

Originally Posted by Best4x4

Crawl under it, and carefully check the 6 nuts securing the cats to the exhaust manifolds. They can sometimes work loose from vibration and all that is needed is a little lube, and tightening them up (DO NOT GO NUTS with the tightening or you could snap a stud off). The gaskets can fail, studs can break = exhaust tick under load, at a cold start up.

I lifted the truck took this video I dont see any visible leaks. You are probably right on the 6 nuts which I have yet to check.

Here is the video.

Jan 4, 2018 | 03:54 PM

#12

Friday Night Disco

Pro Wrench

Joined: Dec 2016

Posts: 1,603

Likes: 229

From: Fall City, WA

I had a massive leak on the drivers side cat that you would not see unless you cut the heat shield away. Mine did sound slightly different but, hard to tell with you tube.

Jan 5, 2018 | 05:18 PM

#13

Big Jim Swade

Winching

Joined: Jan 2011

Posts: 515

Likes: 36

From: Central Idaho

I've got Bosch Platinum's in my 01 for the last 4 years and haven't had any issues.

Jan 5, 2018 | 06:07 PM

#14

EasyDoesIt

Three Wheeling

Joined: Apr 2017

Posts: 96

Likes: 1

From: Las Vegas, NV

Quote:

Originally Posted by Frank4

I have had issues every time I stray from the Champions. E3's, NGK the list goes on. I am sure others have had 10mpg and 30HP gains. Speak up!

I'll bite.

I'm getting 16-17mph on easy road trips going 55-65mph. Using 8mm Wires and NGK G Power Spark Plugs BKR6EGP.

Not sure how much of it has to do with plugs/wires, all the other maintenance i've done, or the gearing/tires. But I got the MPG on two separate road trips.

Jan 6, 2018 | 08:08 AM

#15

JUKE179r

Camel Trophy

Joined: May 2016

Posts: 3,969

Likes: 859

From: Britainistan, UK

I’ve got the NGK Iridium IX plugs (#3764) in Myrtle for the past year with no problems.
It’s known not to adjust the gap on the Iridium plugs because they come pregapped and people can break the thin electrode tip. But I’m glad I did check the gap on my plugs and carefully adjusted them. The NGK plug’s gap measurements straight out the box ranged from .032” to .055”.

Last edited by JUKE179r; Jan 6, 2018 at 08:18 AM.

Jan 6, 2018 | 09:07 AM

#16

CollieRover

TReK

Joined: Mar 2014

Posts: 2,620

Likes: 313

From: Chicago

I put in NGK Iridiums, cannot find the exact model at the moment, but did have to gap them. There is a video on their website on the tool to use. I was a bit worried, due to the iridium having a tendency to break, but the gapping tool never touched the tip.

I put in new Intermotor coilpacks, Kingsborne 8mm wires and the plugs. They are working great so far.