Let's talk about spark plugs....3.5L Montero

[IncorpoRatedX]

Wish it was that easy to change mine. I have a 3.0 LS. I had to remove the upper plenum and clean the contact area before putting it back on with a new gasket. Still did the plugs and wires with gasket in about 1.75 hours.

I've also owned a 3.0 SOHC and 3.5 SOHC that involved taking off the plenum, but if you use a reusable gasket, its not a big deal.

 

[scrubber3]

I installed a reusable one when I did the work. Thank god. I still like to clean things up a bit when I get in there though. I am OCD about that stuff.

 

[LaOutbackTrail]

95 SR, 3.5 liter quad cam checking in, no problems changing plugs, drivers side; remove one bracket and the cover, remove coils and change plugs. passenger side; remove 3 brackets, intake tube and throttle body, remove cover and slide down under egr tube, change plugs. DONE

took less than an hour.

Sure, all fine and dandy, unless you are changing the wires... which takes the longest time because the wires are secured behind the intake plenum. As a "fix" I cheated and ran the plug wires over the intake plenum upon re-installation.

 

[jeep-N-montero]

Bumping an old thread, so has anyone successfully changed plugs and wires without removing the plenum?

 

[The Viper]

Bumping an old thread, so has anyone successfully changed plugs and wires without removing the plenum?

yes, i did it last summer on my 95 SR

 

[Mudrunner]

The Service schedule for the 3.5L on my Sport lists the plenum gasket as a 60k service which is also the same mileage for the spark plugs... interesting...

 

[jeep-N-montero]

yes, i did it last summer on my 95 SR

Both the plugs and the wires?

 

[The Viper]

Both the plugs and the wires?

thats correct

 

[off-roader]

Maybe because the plenum has to come off when you do the plugs? At least it does on mine... Until you learn to leave off the plug covers...

 

[Evo666]

I use NGK in all my Mitsubishi's. They love em For the '99 Montero, I used the Platinum tip.