I recently purchased a 97 Sierra that has been converted to dual fuel(which I know nothing about BTW)the truck ran when purchased but leaked massive amounts of water so I replaced water pump and lower hose .then she wouldn't start so I tried all quick fixes I could think of ( starting fluid and so on ) but due to the dual fuel thing figured I'd just replace fuel pump on gasoline side and still nothing no start actually I don't even hear the pump engaging and yes the propane system is temporarily unhooked due to having to get to the in tank fuel pump so my question is help please