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 Yesterday I noticed a few drops of something on the pavement under the engine towards the rear. After driving home I also noticed a fuel smell once I shut the truck down and got out. 

 This morning I went out with a flashlight to inspect and didn't really see any wet spots other than on the rear of the cylinder head on the passenger side. It's a little damp there. I'm thinking maybe the banjo bolt for the return line? Looks like it might be difficult to get to, anyone know the size off hand? Do I need to remove it and replace the sealing washers or do these commonly vibrate loose from time to time?

 Also, while inspecting I saw the the center section of the front diff seems to be damp with oil or something. While looking down the front of the engine the crankcase vent bottle is pretty oily as well. Do these overflow if not emptied? I have not touched it since I bought the truck (forgot about it when I did the oil change).

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  • The sealing washers are most likely shot. When changed mine i didnt think there was any rubber on them until figured out the rubber was almost as hard the steel part. It will cause the fuel drain back

  • If its fuel that banjo is about the only culprit. If fuel is leaking from the valave cover you have bigger problems. Just to add though, do you see any leaks where.the injectors connect to the hea

  • Dieselfuture
    Dieselfuture

    I had a small drip from bell housing and checked my oil pan bolts, yep sure enough all lose, no more drip now

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On 12/31/2020 at 7:19 PM, Mopar1973Man said:

I pull the fuel drain off of my landlord truck. (Other Shop). I used a T15 and just pull it off and change the 2 o-rings in the valve. Re-assembled and installed again just cost me about 10 minutes and 2 o-rings from my A/C stuff. 

What size were they? I've got a bunch of viton o-rings that should work for this.