For the no start I'd go with the basics first,so check for spark at plugs and whether fuel is being delivered-a guy who lives near where I rent my garage has a 1.8 Mondeo which failed to start and his fault was the fuel pump.Where does it seem to be knocking from? i.e. top of engine,bottom,near side,off side?Is there something you can liken the knock to-such as say the exhaust hitting against body work-to give an idea of the sound it's making?Is it knocking in time with the engine spinning over?
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