Help!!!!!

Just bought a P reg Discovery (petrol v8i)
Just had it serviced.....a few things
Maybe has a problem...Cold morinings, steam comes out the exhaust and the engine misses a little until its warmed up a little (few moments)...could this be the head gasket about to go....or is it normal....
HELP
Thanks
Tony

or liner
Liquid head gasket test fluids are crap, get your local garage to put gas analyser probe under bonnet and start engine =back ground HC
then cap off header tank and hold probe over it=if it jumps in HC then headgasket/liner.

or look for rusty spark plug

For head gasket problems....has anybody used STEEL SEAL???...