Oil Leak
Cargo Master
Joined: Oct 2020
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It was very common to see oil leaks from the head gaskets on some of the Mod engines. Maybe 15 years ago. We used to resurface several heads a month for a local Ford dealer when they were under warranty. It seems like they got it under control and we have not seen that in a while. Also after they were repaired they never came back. What happens is that both sides of the engine leak but the left side leaks at the front of the head and inside of the timing cover where it never hurts anything. The right head leaks at the back and the oil ends up outside of the engine.
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Tuned
Joined: Mar 2014
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Oil Leak
It was very common to see oil leaks from the head gaskets on some of the Mod engines. Maybe 15 years ago. We used to resurface several heads a month for a local Ford dealer when they were under warranty. It seems like they got it under control and we have not seen that in a while. Also after they were repaired they never came back. What happens is that both sides of the engine leak but the left side leaks at the front of the head and inside of the timing cover where it never hurts anything. The right head leaks at the back and the oil ends up outside of the engine.
Cargo Master
Joined: Oct 2020
Posts: 2,673
Likes: 780
That's what they do and the only solution that I know of it to remove the cylinder head, resurface it and then reinstall it with a fresh gasket and head bolts. If I remember right the Ford dealership initially wouldn't resurface a 4.6 head and they would replace it with a new one under warranty. I guess that got too expensive and we cut a lot of those heads for them over the years with no problem at all. You're only talking about removing a few thousandths.
It is always the right side that causes the problem. Both heads are probably leaking but on the left side you never see it.
It is always the right side that causes the problem. Both heads are probably leaking but on the left side you never see it.
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