60K Service 2002 Mitsubishi Montero. My ride is due for 60K service, I wonder how could I change my Spark Plug without removing the Intake Manifold?

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3.5L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system.

Mitsubishi Montero, Sport 1998-06 Firing Orders Repair Guide

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https://www.google.com/search?q=2002+Mitsubishi+Montero+Sport+3.5+firing+order

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1. • 1 Cool the engine before attempting to remove any spark plugs.
     
   • 2 Remove the spark plug wires located across the top of the Eclipse model's engine. The spark plug wires connected to the spark plugs are the flat circular ends. Grab the wire around the circle and twist to unlock the wire. Lift up on the wire to remove it from the engine. Some models with ignition coils above the spark plug may require you to unhook the wire from the ignition coil to remove the wire.
     
   • 3 Drop the socket with the extension and socket wrench attached into the cylinder well and on top of the spark plug. Turn the socket wrench to unscrew and pull the spark plug out of the engine.
     
   • 4 Spray silicone spray into the cylinder well and onto the new spark plug threads.
     
   • 5 Insert the new spark plug into the socket with the threads sticking out. Slide the socket into the cylinder well and gently turn the wrench to the right to thread the spark plug into the cylinder head.
     
   • 6 Use the tension tool to test the tension or torque of the new spark plug. Set the tension to the specifications listed on the spark plug package.
     
   • 7 Reattach the spark plug wire to the new spark plug.
     
   • 8 Continue this process with the other spark plugs. Be sure to only complete one spark plug replacement at a time.
     

Your best bet would be to buy a full service repair manual for your vehicle so you'll always have it when you need to do work on the vehicle. Hayes and Chilton publish and sell full service manuals.

VW say check for fraying of edges,toyota say 60k,personally i suggest every 60k,that way you will not have any VERY big bills when it snaps.......

look hard around your valve cover or your spark plugs holes especially #3 and #5. i found mine on 3 and 5 spark plugs. oil sometimes drip down to hot eng and smell like burn oil. possibility your valve cover that seal your spark plug hole is worn out and leak around the valve cover and straight down to hot area. replacing valve cover gasket is not easy and if you take it shop will cost you over $1000.00 because of intake manifold and a lots of hardwares to remove. shop around before you take it to the shop. if you do it your self with a friend make sure you take picture for every lines ,bolts sensor plugs and so on you remove. also may as well tune up or change your spark plugs. good luck

Hello,
In order for you to get to the other spark pluggs,the intake manifold must be removed,that's the only solution.


Take care..

in the valve covers under intake plenum and yes you have to remove it to change them

If you'll need to remove the intake (or plenum) from the engine there are @ 8-10 No. 12 nuts and or bolts which hold this in place. There are also 1-2 bracket (check by the firewall) you'll need to unbolt too. Be certain to replace the gasket that is found between the plenum and the intake and do not over tighten these nut/bolts only 20ft pounds or so. If you do remove this you'll have to remove the air inlet, throttle cables and remove hoses from the throttle body, some of which carry coolant to properlly preheat the air before enteringthe engine. I have worked on several early 89-93 Monteros without having to remove this for plugs; perhaps different under the hood of the sport.
I hope this may have helped,
Tom

You have to remove the upper intake manifold to get at the wires and plugs. Mitsubishi recommends 60,000 miles for spark plug replacement, if you look in your owners manual they also want you to replacet the spark plug wires also. Timing belt also at 60K

REMOVE THE UPPER INTAKE MANIFOLD