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Discussion Starter #1
Well, following the last 2 winters I have ended up with fouled plugs. (This is kind of routine for when the weather warms up) The 5th cylinder miss firing due to the spark plug being drenched in oil. I would pull #5 and see it drenched in motor oil each time. This year I found 5,6 and 7 with oil. I cleaned the plugs off (1 year old) and they didnt take long to get bad again. I replaced them with new ones and have had much the same result. Unless its the valve covers (which I dont think it is) I think my car is finished! Your thoughts?:(
 

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Discussion Starter #3
Its hard to say. It probably has over 150k on it. I dont know when or if the engine has been replaced. It served its life as a rental car in the beginning. The odometer didnt work when I drove it. I estimate 230k
 

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;Aw heck, if the rest of the car is in decent shape, stuff another motor in there, although the 4.6 is awful hard to kill. I think the 94-95 Birds were the best looking of the MN 12s. The ultimate in my mind is a 94 or 95 with a 96+ engine (easy PI conversion) and a 97 center console!;)

Bob
 

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Discussion Starter #6
any smoke out of the exhaust?
Not too often. It does burn oil but very little. Most of the smoke happens on start ups. I am talking about ALOT OF OIL on these plugs! Are Valve cover leaks common? I cant tell because it is just too dirty! This car is old and has significant rust. I plan on replacing it. I just cant right now
 

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Its not typically indicative of bad valve covers, usually if they are oil fouled its because of bad valve stem seals, the 94-95 2v 4.6 were known for bad valve seals, what happens it at idle or while turned off oil leaks past the seals into the combustion chamber. The new seals can be done in the car but its more of a headache than it's worth. It's usually recommended to upgrade to the 96-97 npi heads due to better valve angle and seals or even 99-04 PI heads if you can get them for the right price, but since a headswap is more involved than most people want to get in a tear down on the 4.6 a full low milage 02-04 PI motor swap is usually more affordable and reliable.
 

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If you have oil leaking on top of the plug its most likely caused by a leaking valve cover gasket and the gromits. What happends is oil leaks can fill the plug hole and short out your spark. It has nothing to do with valve stem seals unless your electrode tips are fouling. Get the full gasket set with the gromits and set a side a afternoon of fun. A set of metric deep sockets will help. I happen to have a set of valve covers with new gaskets in my for sale thread. The gromits are original but did not leak. Check on a price for the entire valve cover gasket set first.

http://s414.photobucket.com/albums/pp225/mwjis/?start=40
 

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Discussion Starter #10
No. I have been in denial. The only way it is "leaking onto the spark plug eletrodes/ground straps is from the valve stem seals or rings. I'm just going to sell it cheap and "fix" it with thick oil or give it away to a co worker. I bought a 97 4.6 Tbird today with no significant rust, sport suspension, disk brakes all around and in really solid shape! OF COURSE I COULD BE WRONG! I will pull the valve covers tomorrow and cheaply seal them up!
 

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Call me dumb, maybe I've been working on the 4V too long, but since the plugs don't go through the valve covers, how could a valve cover gasket leak affect oil getting into the chamber?
 

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Call me dumb, maybe I've been working on the 4V too long, but since the plugs don't go through the valve covers, how could a valve cover gasket leak affect oil getting into the chamber?
I thought he was talking about oil filling the spark plug hole. The oil does not get past the plug but it does short out the spark to the plug and causes a miss fire. I have seen this a few times and i though how the hell does oil get into the plug hole but low and behold if you look at the pic you will see that when the cam spins around on the high side it deflects oil up and right at the seam in the valve cover so if it leaks just a little it runs down into the plug area. 4v is way differnt.
But still there is not way this would cause the plug itself in the combustion chamber to foul with oil unless he has bad heads or the plug is not firing because of the oil on top and it just looks like the plug is fouled. To hard to tell from where im sitting but this sounds like a easy fix.

<a href="http://s414.photobucket.com/albums/pp225/mwjis/?action=view&current=parts17f001.jpg" target="_blank"><img src="http://i414.photobucket.com/albums/pp225/mwjis/parts17f001.jpg" border="0" alt="Photobucket"></a>
 
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