This website gives step-by-step instructions with photos and a list of needed tools. You'll find it dhows everything you need to do this relatively simple task.
http://www.e46fanatics.com/howto/howtodetail.php?howto_id=446
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where is the location of the spark plugs on a 97 BMW 318 ti.
Haynes book says 13 foot pounds
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Six (6). It is a 6 cylinder engine, so 6 plugs.
Go to this link and it will explain the whole process. http://www.e46fanatics.com/howto/howtodetail.php?howto_id=44
The spark plugs are located on each side of the engine. A V8 engine will have four spark plugs on each side. The spark plugs are usually near the bottom of the engine.
Sorry I do not replace sparkplugs.Take your 1999 BMW to a garage, they will do it for you.