Performing a Maintenance Tune-Up on the ICONIC Jeep 4.0L (Plugs, Wires, Distribitor Cap, & Rotor)

[@dfjohnson76]

Dielectric grease should not be applied between electric contact components. It’s an insulator when it’s applied like this your system now has to over come the insulation of the grease. Apply it to the boots and rubber or plastic insulation and it’s great for preventing corrosion and unwanted arcs. The electricity wants to flow metal to metal through the path of least resistance. Dry clean contact points with grease only on insulators.

[@YoNwordjoe]

I have a 98 jeep 4.0 jx and had some minor power loss and regained after 3 or so seconds, a week went by and would have power issues just like you said it would lurch forward at stops and then stall out, now it just won't start, I've taken the cap off, and same thing with cylinder 2 it's all corroded and I've replaced the cps, still won't start

[@tonyhall-s2j]

ever figure it out?? i have a 96 , would jump forward when stopped, sluggish acceleration

[@danhambrick6331]

The Jeep 4.0 runs better with copper core spark plugs.

[@AmericanMadeClassics]

The Jeep seems to be running fine with the ones I put in there :)

[@freedomforliife2854]

same with the rotor and cap..OE is copper im sure brass good...just not alloys aluminum, etc...hes right the others just fail@@AmericanMadeClassics

[@daltoncoleman1820]

I will be getting Autolite Copper core spark plugs thanks 👍🏼

[@freedomforliife2854]

smart i have a 96 mint truck..def sitting a while i pulled out what looked tio be original or bvery very old sparks...champion elite copper ...i put the same ones right back in she runs like a sewing machine..aint that something these old trucks run great and aprts still all over....copper is best man good choice @@daltoncoleman1820

[@B.Zee...]

Similar process for my 4.0 1998 Grand Cherokee Laredo?

[@AmericanMadeClassics]

@@B.Zee... Yessir.

[@B.Zee...]

@@AmericanMadeClassics thanks my guy

[@xaserizm]

You need copper core spark plugs

[@rainocongo4972]

Great video brother ❤Did you have to reset timing at all ?

[@AmericanMadeClassics]

No sir, all of the timing is handled via the computer

[@rainocongo4972]

Whattt ?? Awesome . Well I’m gonna do this on my 94. I placed the plug wires out of order so I’ll fix that now . Thanks again

[@CauseNDAffect]

Don’t buy rock auto gear or products it’s cheap .

[@itchy7727]

I stopped watching when you used platinum plugs.

[@AmericanMadeClassics]

Tell me the plug I should use then

[@brandoku7003]

​@@AmericanMadeClassicsfrom many forums I've read these engines like the champion copper plugs the best.