When a valve is burnt how do the spark plugs look

Asked by Jan 22, 2014 at 07:30 AM about the 2000 Mitsubishi Montero Sport LS

Question type: Maintenance & Repair

I have a 2000 Mitsubishi
Montero and I just changed the
plugs and wires. I found two
plugs with this oily grimmy
substance packed in the end of
them. I have a random miss
code. After changing the plugs
and wires the Misses still there
.so I pulled a wire at a time off
the coilsto check in see if a
coral was not firing. And the
coil that runs number three a
nd number 6didn't change the
motor sound whatsoever.
Could it be I just need a coil
instead of having brunt valves?

2 Answers


Regardless of the valve conditions in the head, no spark needs to be addressed. Your valves/seats my have or may be failing but you should still have spark. A compression test on your cylinders will tell you the coindition of your pistions and valves. For the spark issue it could be a few things. The first thing that I would try is to swap the NFG coil with a good one. If the non working plugs fire and the other pair quits working then I would change the coil. If the same plugs don't work after the swap it will be a electrical issue. Swap the coils and let me know and I will look up your mochine to see what it has for a ICM.

1 out of 1 people think this is helpful.
Daniel Foster

it may not be the coil that is bad,, the PTU (power transfer unit) could also be bad as well,,, but I would start with the coils and test them and see if that's the problem,, you can test them with a voltmeter

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Mitsubishi Montero Sport Questions

Mitsubishi Montero Sport Experts

#1 Daniel Foster
Daniel Foster
Reputation 550
#2 Jared Chase
Jared Chase
Reputation 380
#3 Tom Demyan
Tom Demyan
Reputation 250
View All

Related Models For Sale

Used Mitsubishi Montero"
4 Great Deals out of 174 listings starting at $2,990
Used Toyota 4Runner"
388 Great Deals out of 18,866 listings starting at $2,400
Used Nissan Pathfinder"
487 Great Deals out of 25,028 listings starting at $1,500
Used Toyota RAV4"
1,241 Great Deals out of 49,018 listings starting at $2,495
Used Ford Explorer"
1,417 Great Deals out of 71,748 listings starting at $300
Used Toyota Tacoma"
645 Great Deals out of 30,453 listings starting at $2,850
Used Honda CR-V"
1,690 Great Deals out of 81,785 listings starting at $1,695
Used Toyota Camry"
1,734 Great Deals out of 98,547 listings starting at $895
Used Toyota Corolla"
1,483 Great Deals out of 67,391 listings starting at $1,295
Used Jeep Grand Cherokee"
1,261 Great Deals out of 74,259 listings starting at $1,500
Used Honda Accord"
1,393 Great Deals out of 78,668 listings starting at $1,395
Used Toyota Land Cruiser"
16 Great Deals out of 1,229 listings starting at $3,750