Try these websites http://www.monterosportonline.com/diy-perf2.html http://www.justanswer.com/questions/13zdz-change-spark-plugs-2001-montero
the firing order is 123456 1,3,5 on left side of engine from the front of the vehicle 2,4,6 on the right side of the vehicle googel (what is the firing order for a Mitsubishi montero)
There are two MAP Sensors on the Mitsubishi Montero Limited. They are both located on the left side of the engine about six inches apart. Look for a plug with a wire attached that resembles a spark plug wire boot.
.44 Check your owner's manual, (0.028 − 0.031 inch) for a 2003 3.8L.
Disconnect the battery cables, remove the spark plug cables and covers, and remove the old spark plugs. Next, put in the new spark plugs, attach the covers and spark plug cables and reconnect the battery cables.
I took mine to Tune-Up Masters and I was charged 159.99 because of the extra labor they had to do. On Montero Sports they have to remove the air intake to reach the other spark plugs.
Bad spark plug? Bad wire to plug? Bad ignition coil if COP (Coil On Plug) type? Bad valve? Bad piston? Bad injector?
Replacing spark plugs is pretty simple. Disconnect the battery, remove the cover and cables, remove the old spark plugs, put in the new spark plugs, put the cover and wires back on the spark plugs, and reconnect the battery.
The plugs are located under the intake plenum. This is a real job because it takes removing several bolts, wires and gaskets to get to them.
95 montero takes 6 plugs
We have a 1995 Mitsubishi Montero (the people that brought your the fighter ZERO) and when it came time for a tune-up we couldn't get the plugs out. The car dealer here charged us over 500 dollars for a tune up and they had to remove the top part of the engine to reach the plugs, hence the large dollar value. We will NEVER own another Mitsubishi again! Good luck:)
It is a lengthy process that can be found at http://www.monterosportonline.com/diy-perf2.HTML. you have remove the intake manifold in order to replace the spark plugs or the spark plug wires. It's not a recommended task for unexperianced person.