i have a 91 disco 3.5 v8 with lpg. the bottom end started to rattle so i changed the engine for a 3.5 v8 efi out of a rangey everything is wired up correctly using the disco loom and ecu it has fuel and spark but will not start. the starter wirls over but there is no fire. tried to tow start it but all you get is a popping noise out of the exhaust when pressing the throotle so i thought it could be firing order but checked it against my mates 110 v8 and all appers correct so now im stumped any help or ideas.?
