Hi all,My friend has a 87 C4 with tuned port injection which he has been restoring and when he went to start up the engine it seems to be only firing on one bank , has anyone got any ideas what to check ? He has checked for spark for all cylinders all ok , it appears that he is only getting fuel from the injectors  on one side of the engine ........help.... Paul.

Shorted injector harness?

Thanks for the suggestion, I suppose use a ohm metre to check it out ?