I have a 2002 expedition, all spark plugs were replaced 2 weeks ago,engine light came on again #5 has oil on it and also on the coil.Anyone know what it could be?

Asked by Oct 24, 2015 at 05:13 PM about the 2002 Ford Expedition XLT

Question type: General

1 Answer

9,890

If the plug had oil on the electrode chances are you have lost compression in that cylinder or you may have a bad valve seal. Do a compression check to ensure all cylinders are within 15-20lbs of each other ... low compression can be valves or piston rings ... if compression is OK then oil may be coming from a bad seal ... the oil will foul the plug and it won't fire

Your Answer

Add photo

Related Questions

Search Ford Expedition Questions

Ford Expedition Experts

#1 T_S_T
T_S_T
Reputation 1,920
#2 Larry Sturgis
Larry Sturgis
Reputation 1,400
#3 lightGear
lightGear
Reputation 1,030
View All

Related Models For Sale

Used Chevrolet Tahoe
616 Great Deals out of 36,026 listings starting at $1,800
Used Ford Explorer
811 Great Deals out of 62,484 listings starting at $1,495
Used Chevrolet Suburban
273 Great Deals out of 20,216 listings starting at $1,195
Used Lincoln Navigator
98 Great Deals out of 5,141 listings starting at $1,900
Used Ford F-150
2,217 Great Deals out of 180,842 listings starting at $1,500
Used GMC Yukon
416 Great Deals out of 20,794 listings starting at $1,495
Used GMC Yukon XL
224 Great Deals out of 12,948 listings starting at $1,495
Used Cadillac Escalade
216 Great Deals out of 11,009 listings starting at $2,900
Used Toyota Sequoia
117 Great Deals out of 5,347 listings starting at $2,695
Used Dodge Durango
281 Great Deals out of 20,105 listings starting at $999
Used Ford Excursion
6 Great Deals out of 779 listings starting at $2,750
Used Ford F-250 Super Duty
330 Great Deals out of 43,284 listings starting at $1,250
Used Toyota 4Runner
232 Great Deals out of 21,052 listings starting at $1,500

Used Cars For Sale

2018 Ford Expedition XLT For Sale
3 listings starting at $50,265
2017 Ford Expedition XLT For Sale
1,994 listings starting at $29,493
2016 Ford Expedition XLT For Sale
5 Great Deals out of 126 listings starting at $25,900
2015 Ford Expedition XLT For Sale
34 listings starting at $23,932
2014 Ford Expedition XLT For Sale
4 Great Deals out of 71 listings starting at $17,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.