Truck has about 120k miles on it. No mods, has just been a reliable stock daily driver. Noticed a fuel smell a few months ago. Took it on a 2 hour trip about a month ago. It was fine on the way there. When I got home there was fuel dripping in front of the passenger front wheel, the inside of the wheel was wet, and fuel was all over the battery on that side as well. Truck runs fine. Did some searching, and there was fuel in the valley between the heads. Replaced the hard fuel supply on the passenger side head, no improvement. Took off the fuel filter bowel, replaced the drain valve, o-rings, fuel filter and cap. No more fuel in the valley, but still leaking fuel in front of the passenger wheel.
The front of the motor is completely dry. There is no leak in the valley now. You can sit with the truck running for 20 minutes and no leak. I tried putting it in gear, and sitting still loading it with the breaks, no leak. It looks like somehow fuel is spraying forward onto the radiator overflow tank, and getting blown by the fan over to the passenger side battery when driving. I tried shoving rags around the filter housing, fuel lines, and injector pump. Drove the truck. Rags are dry, but there is still fuel all over the battery, dripping down in front of the passenger tire.
All of the fuel lines run up from the drivers side into the valley of the motor. They are all dry. The injectors are under the valve covers. I have now idea where the source of the leak is now.
Paul
