Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

right i have a c20xe and its hard to start and when it does start it runs lumpy on idle and holds back when u throttle but at full throttle it revs up fine and i have changed ht leads, dzzy cap, rotor arm cos there was a weak spark and i also fitted a new crankshaft sensor because it was broken and i have replaced the fuel injection relay because it got water damaged.

also i have a plug that i dont no where it goes. it goes through the inlet manifold with two earth cables from the engine loom over the injectors it is a 2pin white plug so if anyone knows where it goes would be a big hand at finding the problem.