car not starting unless plug is removed

Asked by May 06, 2016 at 02:27 AM about the 2002 Ford Explorer XLT 4WD

Question type: Maintenance & Repair

2002 ford explorer 4.6 won't start unless a
spark plug is removed. Coolant busted out
up from behind engine. Started running
terrible now it won't run unless a spark plug
is removed. Why will it only run while a plug
is removed?

4 Answers

54,535

Blown head gasket, the cylinder is filling up with coolant causing a hydrolock. Coolant is liquid and non-compressable. I'll bet it is losing coolant also.

1 of 1 people found this helpful.

That'll be the next thing I check

And it will run when I remove the egr valve. As long as there's somewhere else for air to go, it'll run. No more than 2k rpm though.

Nothing wrong with the oil. Wouldn't it be milky looking or something in it?

Your Answer

Explorer

Looking for a Used Explorer in your area?

CarGurus has 70,243 nationwide Explorer listings starting at $2,100.

ZIP:

Ford Explorer Experts

  • #1
    OJ
    Reputation
    11,220
  • #2
    Tom Demyan
    Reputation
    4,430
  • #3
    tennisshoes
    Reputation
    2,590
View All

Related Models For Sale

Used Ford Expedition
343 Great Deals out of 17,083 listings starting at $1,930
Used Jeep Grand Cherokee
949 Great Deals out of 71,834 listings starting at $1,200
Used Ford F-150
2,845 Great Deals out of 212,258 listings starting at $1,300
Used Chevrolet Tahoe
809 Great Deals out of 41,877 listings starting at $1,980
Used Dodge Durango
299 Great Deals out of 23,799 listings starting at $1,500
Used Toyota Highlander
519 Great Deals out of 33,728 listings starting at $2,450
Used Ford Escape
1,041 Great Deals out of 100,295 listings starting at $850
Used Honda Pilot
536 Great Deals out of 39,798 listings starting at $300
Used Toyota 4Runner
331 Great Deals out of 25,179 listings starting at $1,750
Used Nissan Pathfinder
436 Great Deals out of 26,141 listings starting at $2,500
Used GMC Yukon
594 Great Deals out of 22,092 listings starting at $2,145
Used Ford Explorer Sport Trac
47 Great Deals out of 1,743 listings starting at $1,999

Used Cars For Sale

2016 Ford Explorer XLT 4WD For Sale
40 Great Deals out of 1,114 listings starting at $20,000
2015 Ford Explorer XLT 4WD For Sale
128 Great Deals out of 2,812 listings starting at $14,995
2014 Ford Explorer XLT 4WD For Sale
59 Great Deals out of 1,381 listings starting at $12,995

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.