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Edward Webb Posted on May 07, 2016
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Went to change coil pack & plug was covered with oil.Is the Head or headgasket blowed?

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L Pfaff

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  • GMC Master 11,573 Answers
  • Posted on May 07, 2016
L Pfaff
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Joined: Jan 05, 2011
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Edward, may just be a leaking valve cover gasket, have a good tech. have a look and estimate repair.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

4 Related Answers

Anonymous

  • 613 Answers
  • Posted on Sep 24, 2010

SOURCE: after removing all of my coil packs to change my

yes you need to buy a tap and die kit and drill out the bolt so can put new one in probably the rubber on the clamp is melting or the the pack itself is from the clamp

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Anonymous

  • 56 Answers
  • Posted on Oct 24, 2010

SOURCE: there is oil in the

The valve cover gaskets need to be changed. there are rubber grommets that keep oil out of the spark plug holes that dry out and harden with age. Replace gasket and grommets and oil will stay out.

Autotroubles

Sam Akber

  • 1149 Answers
  • Posted on Sep 22, 2011

SOURCE: pulled plugs and oil on #6 cylinder,p0303 code

Yes valve cover gasket needs to be replaced, normally for sluggish I would be looking at a MAF mass air flow sensor.

skychief2001

Stephen

  • 21873 Answers
  • Posted on Apr 15, 2013

SOURCE: after removing coil packs to change spark plugs noticed oil in every cylinder of my 04 gmc envoy

If the oil is on the outside of the spark plugs the most common source is the seals in the valve covers.
Unusual to have all 6 leaking on a truck that new.

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Oil leak to top of sparkplugs on a Holden Aster 1.8 2001. Its not the Head gasket. Coming from a screw hole in centre of head. Seams to be a air valve, with hole in center, ?

Hi Brian what you are describing is a little confusing however if you have oil in the spark plug holes the most likely cause would be the rocker cover gasket. Now this is not the head gasket but the cover that goes on top of the cylinder head. There are normally rubber O ring seals that are part of the sealing gasket they sometimes leak oil into the plug holes. Normally this is the only entrance for oil into spark plug holes. There is or should be a rubber seal at the top of each stalk of spark plug connector from the coil pack to stop water or oil entering the plug hole. However if oil is leaking at the breather pipe connected to the rocker cover there is a very slight possibility it may be leaking oil into the cavity of the coil pack and into the plug hole. This I have never seen as due to its design it would normally find its way down the side of the engine before the cavity for the coil pack. Good luck
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Oil on coil packs and within the spark plug. When taking out the coil pack I can see oil coming from top going down into the spark plug chamber

if the coil goes into the valve covers i would install new value cover gaskets and that should take care of the oil getting on the coil packs or the coil packs are leaking and then you should change them.i looked up your vehicle and noted that the coils are separate from the valve covers,i would inspect the coils and the valve covers and replace as needed, if you find that the coils are leaking you should change it so that you don't have an ignition problem later, autozone has them for your car around 52each or 250-300a set with lifetime warranty
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009 Ve commodore changed oil and car started blowing black smoke and missing was told to put a bit of injector cleaner in now it's blowing white smoke and missing

oil change wont be the cause of the fault

missing could be
a plug , loose plug wire or coil pack
or the DFI below the coil pack


read through thisjust commodors
ve commodore forum for clues or join for free for more support
Forum VE Holden Commodore 2006 2013758baabc-a118-4a75-a86a-59a9c64f296f.jpg
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Spark plugs all black carbon on odd side even side burning clean changed number one coil pack,new plugs new wires????

if oil consumption then valve guide seals may be leaking or head problems.have compression check done
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2004 Honda civic 1.7 vetch. Car blew a spark plug out of head destroying coil and shorting out eld sensor. Put in heli coil, new plugs, ignition coil and eld sensor. Car started and ran perfect until...

If you had a head gasket leak then there would be higher oil pressure but I think you would notice other signs of problems. Air and oil are typically sucked into the carburetor or air intake from the top of the valve cover. This is the Positive Crankcase Ventilation (PCV) Valve. You could try changing this valve. They are cheap and it is pretty easy to do yourself. In Honda's they can have problems leaking oil from this point and if yours is clogged for some reason, that may help (not sure).

As far as blowing a spark plug out, that is a pretty big problem. Immense pressure has to happen for the threads to fail, unless the spark plug wasn't screwed in all the way. I would say there is a mechanical problem in your engine somewhere. Either timing is off slightly or a valve isn't working correctly, or there is something in the cylinder that hit against the spark plug.

How did they repair the spark plug problem?
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VOLVO V50 OIL ON CAMSHAFT COVER

I will try and simplify the problem. I have an oil leak, which I traced up the back of the engine to the cylinder head area.
When I removed the top plastic cover on top of the coil packs I found oil in every recess next to the coil packs. The crankcase breather pipe was also off. The source of the leak is not evident, but it is definetely above the cylinder head gasket area.
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1999 Mercury Cougar 2.5 V6, had a cracked head and/or blown headgasket. Had the motor replaced now it is skipping on one cylinder.

pull the leads one at a time from the coil pack. if you pull a spark plug wire and the engine rpm doesn't change and there is a weak or no spark the coil pack is likely the problem.
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I have a 1998 hyundai excel running rough as if only on 2 or 3 cylinders starts 1st time but running realy bad and blows heaps of white smoke I can drive it and you can feel it not running on all cylinders...

Is the heaps of white smoke come out of the tail pipe LONG AFTER the 15 minutes period?
To pin point a blowing headgasket you will need
1)coolant system compression tester
or
2)chemical reaction test for combustion test gas
If it's the org. engine from 1998,with over 120,000 then blown headgasket is a good possiblity.
Tow it to the shop and let the pro to do the coolant pressure test and combustion gas test.
A full head gasket job with head re-surface (if it can be re-use) is worth it.
Shop around on well estiblished independent shops.
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Oil on spark plug

no, not a blown headgasket, remove the valve cover and inspect the spark plug hole seals(tube seals in the valve cover) replace if brittle and old. also change the valve cover gasket since u have it off...adjust the valves as well
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Car wont start

these cars go through coil packs regularly as the packs overheat due to their position on the end of the engine. I have 3 lanos and have replaced all coil packs at around 90,000 k's.
Hope this helps.
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