White smoke after oil change and O2 sensor changed


Asked by Jul 14, 2019 at 11:00 AM about the 2004 Mercury Grand Marquis

Question type: Maintenance & Repair

Hi. I overfilled my car wiyh oil by one littre of oil. The car
started throwing white smoke from both exhausts. On the
same day i changed the O2 sensor so i thought that the
smoke is temporary and i kept driving for almost 10 days
than i realize that issue is something else. I rechecked the
oil level and found it to be high so i drain the oil and bring it
to correct level. Now 10 days passed and i am still having
white smoke with oil burning smel. I have checked engine
light with p0308. Upon checking the plug 8 i found that the
thread of the plug has oil in it. I am totally confused now. I
am not sure if the excessive oil is still burning or i may have
burned the ring piston. Kindly let me know. I am very busy
and may not be able to take the car to the dealer for
another one week. The car start smoking all the time but
mostly heavy smoke after an hour of drive or if i am idle
with engine on for sometime.

No Answers Yet

Your Answer:

Mercury Grand Marquis Experts

  • #1
    Tracy Hooks
  • #2
  • #3
View All

Find great deals from top-rated dealers


Related Models For Sale

Used Lincoln Town Car
14 listings starting at $2,495
Used Chevrolet Impala
45 Great Deals out of 935 listings starting at $1,995
Used Ford F-150
293 Great Deals out of 13,440 listings starting at $1,700
Used Chevrolet Tahoe
28 Great Deals out of 818 listings starting at $3,500
Used Buick LaCrosse
9 Great Deals out of 222 listings starting at $3,495
Used Ford Taurus
21 Great Deals out of 382 listings starting at $2,521
Used Honda Accord
54 Great Deals out of 1,930 listings starting at $1,995
Used Chrysler 300
40 Great Deals out of 868 listings starting at $2,495
Used Toyota Camry
91 Great Deals out of 1,651 listings starting at $3,799
Used Chevrolet Silverado 1500
132 Great Deals out of 11,192 listings starting at $3,995

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. Content will be removed if CarGurus becomes aware that it violates our policies.