Hi Guys,

Had my Cylinder head changed in March this year because the old one was f'd up, recently the car started using a lot of oil and now it smokes when i drive downhill but when i drive on an uphill or on a straight line the car car doesn't smoke at all and it performs very well. I had to change the plugs coz 2 of them were oiled and the car started misfiring, it seems as if oil flows to the plugs when i drive on a downhill......please help

 

If that's actually what's happening (plugs getting doused) then you need a new valve cover gasket set - the inner gasket seals the spark plug hole bores from oil seepage.

 

^^ Yep, time for new valve cover gaskets.