Hi guys, we are travelling in an unexpected cold spell area. I have the block heater but unfortunately don't have the cord. It got down to about 10 degrees last night and the truck just tries to fire and dies. I have an electric heater blowing on it as my only option (we are in an rv park) do I risk flooding the engine trying to start it? It puffs lots of white smoke when it tries to fire and you can smell the diesel.