I have some problems with my truck. I think fuel is leaking somewhere. I could feel the smell when the engine stops. I have already done a gasket service from BC Diesel. So the possibility of gasket leaking is very less. I like to fix this problem myself (if it is not a serious one). What are the other reasons for this kind of issues? It is a 2007 dodge Cummins 5.9. If anybody here who have expertise in repairing Cummins diesel truck parts, please help me with your advice.