Opel Corsa Lite 1.4i misfiring

I have had the Corsa at the dealer for a service 1,000 km early so they could sort out the misfire. It misfired so badly that the silencer burst!<br> They wanted to do everything (R15k!!) - I did the service at the dealer and the other work my self.<br> The misfire still did not disappear totally, I had it narrowed down to the #4 cylinder, but was at my wits end.<br> So a friend told me to go to the Bosch Service centre in Silver Lakes. Craig called one of his guys who went through his quick routine, isolated the problem to #4, listened to the injector, pressed down on black strip over the injectors - so doing - plugged in the #4 cylinder's injector again!! PROBLEM SOLVED!!<br> Craig says - \Here