We have a 1998 Monaco Dynasty 40 ft rig that we really love with a big Cummins engine but today driving down the freeway we smelled diesel fuel again and suspected another fuel line split which was spraying fuel on the engine, which is indeed what happened we coasted into a Lowe's travel stop in Clinton, OK.
This being the third time I knew what to expect. we didn't even call Good Sam because if you have a fuel, Good Sam will not respond they will tell you to call the fire department and 911. I thought it was lucky we were at a Love's Travel Stop and called the on duty mechanics and when they found out it was a fuel leak they refused to touch it they don't mess with fuel systems either, so here you are stuck out in the middle of nowhere with a split hose and nobody to touch it. Although this may be against your better judgment, the only way to find the leak is to start the engine and look. so my wife started the engine I spotted the leak in one second, immediately had her shut down. I cut out the piece of hose that was split, and leaking and put in a 5/16 dual splined brass connection and tightened down 2 hose clamps. We started the engine no leaks now and continued our journey. Had I not had a good supply of hose repair brass connections and clamps, we would be stuck there on the Oklahoma Plains still tonight instead of in the RV Park. Our engine is a Cummins 6C8.3. Many of these fuel leaks that occur in this are on a fuel return line Cummins uses fuel to cool the engine and it's pumped back and dumped into the tank. we paid $2,500 last year to have that entire hose replaced to the front of the coach. But this leak was on an 18-in hose that went to the diesel fuel filter. I hope this helps somebody.
