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Engine and transmission surfaces ordinarly don't get hot enough to make oily surfaces smoke. Look for oil in contact with the exhaust system. The exhaust system should have no leaks. The tail pipe should extend a few inches past the body opening under the rear bumper.
The best way to clean is from the top of the the engine down. Be very gentle around rubber and plastic parts.
You have the newer generation of plug filling the distributor hole. The new style plug is bad about leaking. The best way to fix it permanently is to install an older generation plug which was found I think on '94 and earlier cars. It is a round plug with an o-ring held in place by a slingshot-shaped bracket that is held in place with a bolt. The head is already threaded for the bolt. Part numbers that might help you find what you need:
30539721 is the plug
7519143 is the o ring ("Sealing Ring")
8362287 is the bracket that holds the plug ("Distributor holder")
8082950 is the screw that holds the bracket possibly superseded by 9166323
You have to remove the valve cover and knock out the old plug from the inside. If a leaking plug annoys you, and if you want a long lasting repair then finding the above parts it worth the effort.
The valve cover gasket tends to weep more than leak. If it is weeping into the spark plug galley then you can't see evidence of the leak without removing the direct ignition cassette. The galley has a drain built into the right side. It has the potential to drain down the end of the head and onto the automatic transmission.
If the valve cover is weeping along the front edge then the result can be oil on the exhaust manifold gasket and exhaust manifold. That gets hot enough to smoke.
The PCV leak is messy but not a source of smoking oil. It will leak less if you replace the nipple and its gasket.
9549593 Gasket the nipple plugs into
Can't give you much advice about steering. There is a large bushing at the rear of each front control arm that is essential for steering control. But I don't recall it causing a sense of play in the steering. Rubber parts like that bushing and the lower engine and transmission mounts tend to go bad when they get oily.
It is common for the head gasket to leak a little oil at the front corner on the drivers side. Not much you can do about that.
Decide what you want to do and gather the parts, tools and supplies so you'll be ready when good weather arrives.
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