Originally Posted by 66Bronco
My '95 was leaking fuel to the point where fuel was on the ground. I changed the fuel filter/water separator and it quit leaking as bad. The leak was due to the o-ring shrinking due to the fuel change. Also, check your supply pump in the engine valley. (It's underneath the black cover on top of the engine) There is a weep hole on the bottom of the pump that leaks if the seals go. (Mine does this also, due to the fuel change) If you have fuel in the valley, more than likely that's your problem. The pump is about $150 from the dealer, but the turbo pedestal has to be removed to replace it. As for mine, the leak is annoying, but the truck runs fine and the pump isn't going to fail (just leak). Also, the seven hour labor charge is somewhat painful. Hope this helps.
My truck was running good then I started smelling diesel and knew it was the pump. I drove it for a couple months since it wasn't leaking on the ground and then my truck started running rough. I thought maybe I was sucking in air into the system and that was causing the missing sound. So I changed the pump. The leak from the pump went away, but the sensor just above the fuel line between the filter housing and the pump is now leaking. Unfortunately the miss is still there. I needed to change the glowplugs so I checked the injector oil spouts for oil, valve spring height, rockers, and for bent pushrods and everything looked ok. At 222,000 miles, I think I should just change the injectors and hopefully be done with the problem. I don't know though and that is my problem that is aggrivating the @#%$ out of me.