this is roast again im asking again 78 dodge tradesman 200. with a brand new 360 in it with only 3000 miles on it. i know a donation would help but im 25 years old and im on my way to maine on friday i need all the money i can get so i can make it there since this is such a gas hog im sorry i cant do a donation but would really help if u have a answer. the heater has worked fine in it until today as soon as i turn it on it releases exhaust fumes into the cab y is that