Smoke comin from top rocker cover smell like burnin oil

6 cyl or V8
burning smell oil leak at rocker cover or other places hitting the zorst
exhaust joint leak

white smoke steam
welsh plug ,inlet manifold gasket , hose

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Check your rocker cover gaskets for any signs of oil leaks. Oil leaking from your engine can contact the exhaust headers, or other hot parts of the engine and can burn, resulting in smoking and a burning smell.

check to see your rocker cover is not weeping oil. This can also come from oil pressure switch etc and spill onto the exhaust manifold. Could even be rear main seal. Check these by wiping around these areas with a clean rag and inspecting after a day or to. Then fix wots leaking! hope this helps

Do you notice a puddle under the car? Or smoking when you shut it off? The rocker cover gaskets are the culprit. If you have the spark plugs in a well inside the rocker cover, the will fill up with oil and also leak out the back. You can replace the gaskets, a fairly easy job, you have to pull everything off the top of the engine to get the covers off. And they give you the new seals for the spark plug well with the gasket kit. They only go about 10 years, I replaced mine and they are starting to leak again. Hope this helps.

is that a typo
should it be 1996 FIAT PUNTO 55S

degrease the engine with off the shelf products

if leak is confirmed from the top of motor

redo rocker cover seal with silicon
see if that slows the leak
cam seals may not have been replaced when you thought they were

grating noise at belt could be idler bearing

oil leak onto exhaust and smoking
real engine seal . sump

More then likely no... this is either the supercharger oil (sulfer smell) or from the rocker arm cover gasket leaking.... check if the rocker arm cover gasket is under recall?

probably leaking rocker cover gasket ,oil slowly lands on exhaust,ive got one and had exactly the same symptoms and rocker cover gaskets were the issue

you think all gaskets and rings will cover everything? 1st thing you must do is determine the source of the smoke. If it only smokes at idle, but never under accel or at cruise, I would HIGHLY doubt its rings. Rings leak worst under pressure...when accelerating or under high load. If it smokes at idle and even more under long decels (like coasting down a long hill) it may very well be valve seals. If it ONLY smokes at idle and never any other time, it may be as simple as plugged oil returns or a PCV problem? Dont start changing things. DIAGNOSE 1st, then change when you have determined a cause.

possibly oil leak from rockercover onto exhaust,burning smell and even a little smoke,i had a 98 and the same issue,theyre very good so its not going to be too serious,rocker cover gaskets are normal to do