I have a 1994 E350 Motorhome Class C with a 7.5L engine. I had an issue with pack rats, and have since gotten rid of them. The issue I have is the following: The wire to the #2 fuel injector was chewed through. I went ahead and re-attached the wires. Now the issue I have is that I am now only getting fuel to 4 injectors. The injectors are ran by a red wire and a colored wire, with 4 being white wires, and 4 being tan wires. The problem wire is the white one. I have performed a continuity test from the PCM and the injectors, and the wire is good. My questions being: When the wires were chewed through, did it short out the PCM, or is there something else that could be causing the injectors not to work? It just seems odd to me that I have a good continuous wire to the PCM, but the injectors do not work. The tan wired injectors are working fine.

 

check your ground wire (s). could be that one of them got eaten also. When looking at used MH's a guy had his outside and used mothballs in cans around the engine bay to keep the critters out. I think he also had them in any opening (i.e. sewer, water etc) Said he didn't have any problems with rodents. Also kept the hood ope to keep quail out of nesting areas?