4 cyl or 6 cyl? Either way it goes it's a harry job. You have to remove your intake manifold, and heads to get to the has gaskets. Parts are cheap, but labor is usually an arm and a leg. If the car has overheated because of the had gasket going bad, repair shops have to send the heads to a machine shop to be re-surfaced.
I assume you mean the valve cover gasket. You replace it by removing the valve cover and cleaning off the oil gasket and the mounting surface. The install the new gasket and reinstall the valve cover. Tighten it to the specifications the manufacture of your engine recommends.
On all cars it is located on the throttle plate. That is where the air intake and throttle linkage are located.
pay a mechanic $700 or buy a $2.00 for sale sign
The oil dipstick has a small gasket at the bottom of the dipstick. Replace the gasket with a new one and the oil should stop leaking.
On a Ford Contour , 2.5 litre V6 engine : firewall 1-----2-----3 4-----5-----6 front of vehicle > driver
I did it twice on my 92 trans sport 3.8 In theory it is very simple: the water pump is located on the RH side behind (and driven by) the serpentine belt. Unscrew, remove, replace. The difficult part is to get rid of the remains of the old gasket, this must be done thoroughtly and carefully, allow 2 to 4 hours for this part of the job only. You can use a gasket remover spray and a piece of scrap copper 'or soft metal), as not to harm the aluminum surface.
it has one muffler
Try fuse #27... This is well detailed and illustrated in the Owners Manual - See "Related Questions" below for more
Inside the transmission under the pan.
It means your vehicle is running lean you will need to replace the intake manifold gasket, as it is plastic and the seal wears out.
5w30, pick your brand. all are good
on my 1999 Ford Contour the oriface tube was located under the hood on the firewall on the high pressure line, below the larger low pressure line, need to buy disconnect tool fuel/ac line tools, remove and then along the line is a connection with two nuts 22mm and 19mm unscrew and remove hose