I have a 1998 mitshubishi eclipse I replaced the downside of the exhaust started to change the plugs and when I did there was oil covering two of the plugs there is also a vibration when the car is ideling im not sure what this could be
Oil is leakng into the plug tubes from the plug seals under the valve cover. When the spark plugs are flooded with oil misfiring would occur, causing the vibration.
March, 20, 2011 AT 3:14 PM
And how much of a pain is it to replace those
March, 20, 2011 AT 5:41 PM
It is not too difficult to do the job. All you need to do is to remove the rocker cover and you can replace the seals.
March, 20, 2011 AT 8:27 PM
Ok just one more just to clear the air the oil is not comming out of the top of my spark plug its only when I take the plug out the bottom of the plug is soaked in oil its only my 2 left plugs looking at the engine I was also told this was my rings is this possiable as well if so how to get kind of a temp fix but will last a while
March, 21, 2011 AT 1:40 PM
A ring problem would fouls the spark plugs but not soak them. Bad rings would consume oil but not leak out. Whoever told you that is not versed with the engine. Only external leaks can soak the plugs. If the leak is minimal, it would take some time for the oil to accumulate. If you dry out the oil, there is a possibility you can still drive around without any problem.
A temporary fix is to remove the rocker cover and clean the gasket and reinstall with a thin layer of gasket sealant in between.
March, 21, 2011 AT 6:49 PM
Another person has told me valve seals there not sure because its not smoking at all thank you for all your help if this was an older car I would jump in with no questions but im not to good with forien cars
March, 21, 2011 AT 7:55 PM
You're welcome. Likewise valve seal problems would be similar to bad piston rings, consumption of oil with emission of smoke, especially when starting from cold. Oil would not leak out. If you look closely, you should notice oil around the plug wires and tubes, indicating hardened plug seals. Foreign cars work on the same principles, just that designs are different and being not familiar means you might be slower with any work on them. In fact Japanese cars are rather easy to work on as they are quite mechanic friendly without the necessity to remove too many components to get to one, except accessibility might be hampered by space constraints.