When the motor heats up, the spark plug on the driver's side become black and the exaus smoke comes out black too. What can cause this problem?

5

Asked by Mar 08, 2015 at 08:52 PM about the 2005 Chevrolet Silverado 1500 LT Crew Cab Short Bed 2WD

Question type: Maintenance & Repair

I have a Chevy 1500 LT 2005 with a 5.3 vortec

2 Answers

19,865

This sounds like your burning oil in the cylinder. Either you have a broken piston ring, or you may have a valve guide letting oil into the cylinder. When you say the spark plug on the driver's side becomes black, do you mean on the outside of the plug, or on the plug itself when it is removed from the cylinder head? If it is on the outside, you may have a valve gasket leaking on it or you have a cracked cylinder head that is leaking oil into the cylinder and onto the plug itself on the outside. Have a compression check done on all cylinders. If there is a crack, leak or bad valve guide it will show up. You also may have a hole in the cylinder. Does the engine run ruff? Check the oil and see if water is getting into the oil. That may indicate a head gasket or cracked head. Good luck.

1 people found this helpful.
215

Black exhaust defines high carbon production, high gas pressure

Your Answer:

Chevrolet Silverado 1500 Experts

  • #1
    John Carson
    Reputation
    3,480
  • #2
    Rowefast
    Reputation
    2,420
  • #3
    Andrew Olsen
    Reputation
    2,210
View All

Related Models For Sale

Used GMC Sierra 1500
749 Great Deals out of 61,489 listings starting at $1,395
Used Ford F-150
2,415 Great Deals out of 207,421 listings starting at $1,300
Used Chevrolet Silverado 2500HD
389 Great Deals out of 30,294 listings starting at $3,000
Used Dodge Ram 1500
323 Great Deals out of 9,371 listings starting at $1,995
Used Toyota Tundra
438 Great Deals out of 39,519 listings starting at $2,900
Used Toyota Tacoma
432 Great Deals out of 48,711 listings starting at $2,994
Used Chevrolet Tahoe
571 Great Deals out of 38,557 listings starting at $1,243
Used Chevrolet Colorado
273 Great Deals out of 40,691 listings starting at $1,999
Used Ford F-250 Super Duty
501 Great Deals out of 39,752 listings starting at $2,590
Used GMC Sierra 2500HD
141 Great Deals out of 17,658 listings starting at $2,995
Used Dodge Charger
294 Great Deals out of 32,237 listings starting at $1,850
Used Ford Mustang
256 Great Deals out of 38,498 listings starting at $1,350
Used Chevrolet Silverado 2500
201 listings starting at $5,400

Used Cars For Sale

2019 Chevrolet Silverado 1500 For Sale
1 listings starting at $56,430
2018 Chevrolet Silverado 1500 For Sale
172 Great Deals out of 98,868 listings starting at $18,717
2017 Chevrolet Silverado 1500 For Sale
119 Great Deals out of 8,486 listings starting at $15,995
2016 Chevrolet Silverado 1500 For Sale
175 Great Deals out of 6,519 listings starting at $13,995
2015 Chevrolet Silverado 1500 For Sale
188 Great Deals out of 10,040 listings starting at $10,995

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.