My 96 ford taurus is leaking somewhere under the valve cover it looks like a hose or somethin that goes under the valve busted it only leaks when it get hot but other than that it runs fine. what could this be .

Check your head gasket.

The age of your vehicle also guarantee's a vacuum leak. It may sound silly but the truth is rubber grommets, and hose's shrink and dry out over time and the harsh environment under the hood makes it worse. Check all vacuum lines and fittings attached to the intake manifold, valve covers (pcv valve), and be sure to check for a vacuum fitting on top of the intake just behind the throttle body. Does it fit tight in the hole? You can seal loose fittings with a high-temp RTV (Red) silicone sealant/adhesive. Several small leaks add up and your engine, heat/AC, and transmission will be all to glad to tell you about it.

remplace the lines napa or oraily they have those but you need someone to enstall thim

Should find it on valve cover

Clean it every 3 years & put it back

Spray it with Brakleen etc

It only stops oil from leaving
the valve cover,no other function

As long as the hose doesn't
have a vacuum leak, you all set

The PCV Valve will last 20 years

Not necessarily. If you get a scan of the system, you will probably see the computer has set trouble code P0455. This can be a large leak anywhere in the evaporative emissions system. The gas cap is always the first place to look. If the cap is loose, there's your problem. If not loose, look over the seal and also the inlet pipe to see if it looks like it could be leaking evaporation gasses. If in doubt, replace the cap.
If there was no problem there or if you put a new cap on and the light stays on for days afterward, start looking for another leak. There is a vent line coming off the fuel pump along with the fuel lines. It is usually connected with a short rubber hose to the pump assembly. make sure that hose isn't leaking. Then follow the vent line to the evaporation cannister. Check all hoses at the cannister and the cannister itself for damage. Then follow the other lines from the cannister. You should encounter the vent valve along the way. Make sure the vent valve isn't stuck open or leaking. Well, that's the whole system except for the part that sets the code. There is a little pump somewhere that pressurizes the system to check for leaks. Make sure that thing's hoses are good too. At this point, you should have found the leak. If you have any questions, please let me know.

Check the hoses coming from your egr they are prone to cracking and leaking.

SMOKING UNDER HOOD CAN BE CAUSED BY MANY THINGS.BUSTED OR LEAKING RADIATOR HOSE.POWER STEERING HIGH PRESSURE HOSE RUPTURE GET FLUID ALL OVER HOT EXHAUST MANIFOLD CAUSING SMOKING.LEAKING VALVE COVER GASKETS ALLOW OIL TO LEAK DOWN SIDE HEAD TO HOT EXHAUST MANIFOLD CAUSING SMOKING.ELECTRICAL SHORT CAUSE SMOKE.

More than likely (and hopefully) it is the timing chain cover gasket. Common problem on Tauruses with the Vulcan V-6. Had the same problem. Replaced gasket and leak stopped. Not cheap if taken to a mechanic, but is doable if you have some experience and the equipment.

Look for a loose or broken vacuum hose... a handy tool to use is a piece of 1/2 inch diameter hose to use as a stethoscope... sometimes you can locate the leak that way... if the leak is from the heater controls it might also be under the dash (although most cars have a check valve to prevent a leak in this system from killing the engine) ...Hope this helps...;-)

bad seal somewhere and the oil is simply leaking out due to the pressure, not much to worry about but i would get the leak sealed!