Coolant in intake manifold and oil in spark plug holes?
1. I pulled my throttle body to clean my iac and throttle body. I noticed on the bottom of intake manifold a thin layer of oil with a green tint to it. Is this from a leaky head gasket or intake manifold gasket? I might be loosing a little coolant. I have to keep an eye on it. No smoke or coolant in the oil so I guess that is good.
2. I noticed about an inch of oil on two spark plugs (drivers side first two). I assume this is from a leaking valve cover gasket?
Thanks for any input.
2000 ford escort dohc 4 cyl
2007 ford edge