i have just picked another one up now have 2 a 1999 and a 2000
both cheap because they cut out and run lumpy now i have seen them advertised saying needs injectors
they don't have injectors
if you remove the plastic cover of the engine and the large rubber pipe from the air box to the rear of the engine you will see this
(IMG:http://i76.photobucket.com/albums/j8/tez711/2009_0901r60001.jpg)

undo the 2 fuel pipes the wiring plug and 4 bolts remove and presto this is your problem top pic is the other side of the unit
next pic is the inside of the manifold


(IMG:http://i76.photobucket.com/albums/j8/tez711/2009_0901r60002.jpg)
(IMG:http://i76.photobucket.com/albums/j8/tez711/2009_0901r60005.jpg)
clean it all of with wire brush on a drill etc use a hoover to get all the dust from inside
bolt it back together and its like new stick some carbon cleaner from halfords etc through the fuel system