what causes oil to leak on spark plugs ?

xdale
0

Asked by Sep 20, 2010 at 06:05 PM about the Ford Contour

Question type: Maintenance & Repair

after removing spark plugs I noticed oil on two plugs enough to cause fouling.

17 Answers

David Koppa
415

Most likely a blown head gasket, check the coolant and see if its muddy or oily looking and check the oil for bubbles and foaming. If you mean oil on the outside of the plugs, (not on the electrode) then it is most like a valve cover gasket leaking oil down onto the plugs.

30 out of 30 people think this is helpful.
Alex Baron
225

Its probably the valve cover gasket(s), not the head gasket. Its a common problem.

21 out of 21 people think this is helpful.
Jonathan Furse
3,095

Bad piston rings or head gasket.

11 out of 11 people think this is helpful.

broken oil rings.

9 out of 9 people think this is helpful.
Damon Jackson
165

valve cover gasket needs to be replaced with the spark plug oil seals also. should all be included in a fel-pro valve cover gasket set. assuming its the 4 cylinder car.

11 out of 11 people think this is helpful.

what a bunch of bull,none of this post makes sense,valve cover leaks on the outside when bad,only way to get oil on the plugs are bad valve seals or broken oil rings.

29 out of 29 people think this is helpful.
Larry Quigley
8,330

On a overhead cam engine the plug are recessed down in the block. This means there valve cover gasket seals the outside edge of the vale cover as well as the openings around the plugs. So the seal can fail around the plugs letting oil get into the plug area and it can eventually seep down the plugs. Be to check that you don't have a clogged pvc system causing a pressure build up. I've seen this cause similar leaks before.

20 out of 20 people think this is helpful.
newscctv
60

valve cover gasket needs to be replaced with the spark plug oil seals also. should all be included in a fel-pro valve cover gasket set. assuming its the 4 cylinder car. http://www.wellbridal.com

6 out of 6 people think this is helpful.
Adam Christenson
105

That could be your piston rings.

3 out of 3 people think this is helpful.
Sunil_Yadav_1974
20

Oil leaks into the spark plug when the bike is driven ob the road by pressiing the clucth.As a result the clutch get free, due to gap between the plates and oil packing in the clutch plate starts flowing to the engine in large amount under high pressure effect. This accumulates over the piston and produces unburned fuel. This fuel gets accumated on the top head as the piston moves from BDC to TDC. This fuel blocks and produces hinderance in starting of engine.

2 out of 2 people think this is helpful.
codywoods13
120

I have w reg fiesta had the head gasket done about a month ago. And now it's starting stuttering really bad and rev up and down and now wot start at all now and I have oil all over 2 spark plugs

12 out of 12 people think this is helpful.
biguy59nw
20

Was spark plug tube seals on my Honda 2.2l 10 bucks.

Eugene Eric Louw
20

1,2 sparks plugs gets oil.I allreay put new vavle stamp seals.what is that and the car have that loud funny idela.

2 out of 2 people think this is helpful.
Elaina_w63
80

I have same prob. On my 1999 Chevy cavalier Z24 2.4 liter with twin cams...I was told 500 to replace the valve cover gaskets because there are two and it's hard to get to them....I wiped all the oil from the plugs and even changed out the oil pressure switch to see if that would help until I can afford to have it fixed, and it didn't help at all. The car is not over heating, no black smoke, it's just hesitating badly with low fuel power. Stuttering and very sluggish. Any thoughts?

8 out of 8 people think this is helpful.
Dennisbacon
150

what causes oil to leak around spark plugs

15 out of 15 people think this is helpful.
biguy59nw
20

I changed my spark plug tube seals, I saw that the new ones were much thicker. I also still had some oil on the plugs so I got a new valve cover gasket and it too was much thicker than the old one. Now there is no oil on the plugs. I am going to finish off this job now with new grommets and a PCV valve and seal. My advice is to change all these at the beginning, this is obvious. (95 Honda Odyssey BTW)

2 out of 2 people think this is helpful.
Abbs Alengia
0

Am here at mechanic getting my spark plugs replaced and they just called me back for this same exact issue that when they removed my spark plugs they had oil on them and he said I need my valve cover replaced so theres your answer to your question not pricey at all for part the labor is the pricey one

Your Answer

Add photo

Related Questions

Contour

Looking for a Used Contour in your area?

CarGurus has 156 nationwide Contour listings and the tools to find you a great deal.

ZIP:

Search Ford Contour Questions

Ford Contour Experts

#1 tropikalpirate
tropikalpirate
Reputation 590
#2 David Koppa
David Koppa
Reputation 300
#3 Wesley Beadle
Wesley Beadle
Reputation 260
View All

Related Models For Sale

Used Ford Escort"
556 listings
Used Ford Fusion"
1,183 Great Deals out of 74,863 listings starting at $1,550
Used Ford Mustang"
690 Great Deals out of 41,642 listings starting at $1,500
Used Ford Focus"
843 Great Deals out of 59,244 listings starting at $799
Used Ford Taurus"
326 Great Deals out of 19,839 listings starting at $990
Used Ford Escape"
1,269 Great Deals out of 89,735 listings starting at $1,000
Used Toyota Camry"
1,460 Great Deals out of 89,305 listings starting at $695
Used Ford F-150"
2,609 Great Deals out of 196,845 listings starting at $1,600
Used Ford Explorer"
960 Great Deals out of 64,528 listings starting at $995
Used Ford Ranger"
255 Great Deals out of 7,568 listings starting at $495
Used Ford Explorer Sport"
304 listings starting at $995
Used Chevrolet Malibu"
942 Great Deals out of 62,506 listings starting at $695
Used Chevrolet Impala"
887 Great Deals out of 31,816 listings starting at $995
Used Honda Accord"
1,073 Great Deals out of 74,013 listings starting at $1,400