when i got home this evening i smelled a slight wiff of diesel. looked up under the truck and saw some fuel on the underside of the intake. it appears that i have some fuel weeping out of the injector lines where the connect to the head.it seems to be runnig to the back of the intake and down. over the years i have had to crack them open on occasions. are there not some o rings or some other form of seal that might need to be replaced at these connnections?