HELP! Leaky oil question/seals?

2000 crown vic


126k





I did a tunup and pulled out a plug from the combustion chamber andI have oil on the threads of the spark plugs and the tip too. The car is misfiring on 3 and 4 cyl.





my question again is





the mechanic said it needs spark plug seals and the other guy said it need valve stem seals?





Is that the same thing?








one guy siad the valve cover needs to be removed and on the back of it it has some grommets that are leaky.


is this right?








what the Heck is going on here?





thanksHELP! Leaky oil question/seals?
Never herd of well seals,but valve stem oil seals yes. These sit on top of the valve guides on the cylinder head to prevent oil from running down the valve stem and into the cylinder.If your car is misfiring and running poorly,get a compression test carried out,this will tell you if it is a blown headgasket or a burnt valve or worn piston rings.There are 2 types of compression test. A dry test,where you insert the compression guage and crank the engine and note the readings of a particular cylinder.The 2 nd test is where you put a small amount of oil into the cylinder via the spark plug hole and again crank the engine and note the readings.If the compression increases with a small amount of oil added to the cylinder,this indicates worn piston rings.If the reading remains the same as the dry test,its either a head gasket or burnt valve.Or it could simply be a valve cover gasket leaking....easy enough to change..hope this is some assistance to you.HELP! Leaky oil question/seals?
valve covers seals/grommets leaking is a very common problem and usualyl causes oil on the spakr plug threads





happens all the time on most makes and models and has been a problme since well the beginning of existence of the internal combustion overhead valve engines





have the VC gaskets/grommets replaced and put new wires on it and new plugs too if they are badly oil soaked or are physically worn from mileage





and then see how it does over time








good luck
If its the valve cover, then there's be visible oil around the valve cover. If that's not it then I might believe valve stem seals.





Spark plug seal???


Mechanic for thirteen years and never heard of them.
Actually, it needs spark plug well seals, which are usually under the top of the valve cover. Its NOT valve stem seals-don't ever take your vehicle back to THAT guy again.
spark plug seals.???.listen better or get new mechanic if u heard right..just put new plugs and see how it runs before u let these jokers take your money..original plug wires??? way overdue

eyeshadow